--- /dev/null
+crypto-API support for z990 Message Security Assist (MSA) instructions
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+
+AUTHOR: Thomas Spatzier (tspat@de.ibm.com)
+
+
+1. Introduction crypto-API
+~~~~~~~~~~~~~~~~~~~~~~~~~~
+See Documentation/crypto/api-intro.txt for an introduction/description of the
+kernel crypto API.
+According to api-intro.txt support for z990 crypto instructions has been added
+in the algorithm api layer of the crypto API. Several files containing z990
+optimized implementations of crypto algorithms are placed in the
+arch/s390/crypto directory.
+
+
+2. Probing for availability of MSA
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+It should be possible to use Kernels with the z990 crypto implementations both
+on machines with MSA available an on those without MSA (pre z990 or z990
+without MSA). Therefore a simple probing mechanisms has been implemented:
+In the init function of each crypto module the availability of MSA and of the
+respective crypto algorithm in particular will be tested. If the algorithm is
+available the module will load and register its algorithm with the crypto API.
+
+If the respective crypto algorithm is not available, the init function will
+return -ENOSYS. In that case a fallback to the standard software implementation
+of the crypto algorithm must be taken ( -> the standard crypto modules are
+also build when compiling the kernel).
+
+
+3. Ensuring z990 crypto module preference
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+If z990 crypto instructions are available the optimized modules should be
+preferred instead of standard modules.
+
+3.1. compiled-in modules
+~~~~~~~~~~~~~~~~~~~~~~~~
+For compiled-in modules it has to be ensured that the z990 modules are linked
+before the standard crypto modules. Then, on system startup the init functions
+of z990 crypto modules will be called first and query for availability of z990
+crypto instructions. If instruction is available, the z990 module will register
+its crypto algorithm implementation -> the load of the standard module will fail
+since the algorithm is already registered.
+If z990 crypto instruction is not available the load of the z990 module will
+fail -> the standard module will load and register its algorithm.
+
+3.2. dynamic modules
+~~~~~~~~~~~~~~~~~~~~
+A system administrator has to take care of giving preference to z990 crypto
+modules. If MSA is available appropriate lines have to be added to
+/etc/modprobe.conf.
+
+Example: z990 crypto instruction for SHA1 algorithm is available
+
+ add the following line to /etc/modprobe.conf (assuming the
+ z990 crypto modules for SHA1 is called sha1_z990):
+
+ alias sha1 sha1_z990
+
+ -> when the sha1 algorithm is requested through the crypto API
+ (which has a module autoloader) the z990 module will be loaded.
+
+TBD: a userspace module probin mechanism
+ something like 'probe sha1 sha1_z990 sha1' in modprobe.conf
+ -> try module sha1_z990, if it fails to load load standard module sha1
+ the 'probe' statement is currently not supported in modprobe.conf
+
+
+4. Currently implemented z990 crypto algorithms
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+The following crypto algorithms with z990 MSA support are currently implemented.
+The name of each algorithm under which it is registered in crypto API and the
+name of the respective module is given in square brackets.
+
+- SHA1 Digest Algorithm [sha1 -> sha1_z990]
+- DES Encrypt/Decrypt Algorithm (64bit key) [des -> des_z990]
+- Tripple DES Encrypt/Decrypt Algorithm (128bit key) [des3_ede128 -> des_z990]
+- Tripple DES Encrypt/Decrypt Algorithm (192bit key) [des3_ede -> des_z990]
+
+In order to load, for example, the sha1_z990 module when the sha1 algorithm is
+requested (see 3.2.) add 'alias sha1 sha1_z990' to /etc/modprobe.conf.
+
head-$(CONFIG_ARCH_S390X) += arch/$(ARCH)/kernel/head64.o
head-y += arch/$(ARCH)/kernel/init_task.o
-core-y += arch/$(ARCH)/mm/ arch/$(ARCH)/kernel/ \
+core-y += arch/$(ARCH)/mm/ arch/$(ARCH)/kernel/ arch/$(ARCH)/crypto/ \
arch/$(ARCH)/appldata/
libs-y += arch/$(ARCH)/lib/
drivers-y += drivers/s390/
--- /dev/null
+#
+# Cryptographic API
+#
+
+obj-$(CONFIG_CRYPTO_SHA1_Z990) += sha1_z990.o
+obj-$(CONFIG_CRYPTO_DES_Z990) += des_z990.o des_check_key.o
+
+obj-$(CONFIG_CRYPTO_TEST) += crypt_z990_query.o
--- /dev/null
+/*
+ * Cryptographic API.
+ *
+ * Support for z990 cryptographic instructions.
+ *
+ * Copyright (C) 2003 IBM Deutschland GmbH, IBM Corporation
+ * Author(s): Thomas Spatzier (tspat@de.ibm.com)
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ */
+#ifndef _CRYPTO_ARCH_S390_CRYPT_Z990_H
+#define _CRYPTO_ARCH_S390_CRYPT_Z990_H
+
+#include <asm/errno.h>
+
+#define CRYPT_Z990_OP_MASK 0xFF00
+#define CRYPT_Z990_FUNC_MASK 0x00FF
+
+
+/*z990 cryptographic operations*/
+enum crypt_z990_operations {
+ CRYPT_Z990_KM = 0x0100,
+ CRYPT_Z990_KMC = 0x0200,
+ CRYPT_Z990_KIMD = 0x0300,
+ CRYPT_Z990_KLMD = 0x0400,
+ CRYPT_Z990_KMAC = 0x0500
+};
+
+/*function codes for KM (CIPHER MESSAGE) instruction*/
+enum crypt_z990_km_func {
+ KM_QUERY = CRYPT_Z990_KM | 0,
+ KM_DEA_ENCRYPT = CRYPT_Z990_KM | 1,
+ KM_DEA_DECRYPT = CRYPT_Z990_KM | 1 | 0x80, //modifier bit->decipher
+ KM_TDEA_128_ENCRYPT = CRYPT_Z990_KM | 2,
+ KM_TDEA_128_DECRYPT = CRYPT_Z990_KM | 2 | 0x80,
+ KM_TDEA_192_ENCRYPT = CRYPT_Z990_KM | 3,
+ KM_TDEA_192_DECRYPT = CRYPT_Z990_KM | 3 | 0x80,
+};
+
+/*function codes for KMC (CIPHER MESSAGE WITH CHAINING) instruction*/
+enum crypt_z990_kmc_func {
+ KMC_QUERY = CRYPT_Z990_KMC | 0,
+ KMC_DEA_ENCRYPT = CRYPT_Z990_KMC | 1,
+ KMC_DEA_DECRYPT = CRYPT_Z990_KMC | 1 | 0x80, //modifier bit->decipher
+ KMC_TDEA_128_ENCRYPT = CRYPT_Z990_KMC | 2,
+ KMC_TDEA_128_DECRYPT = CRYPT_Z990_KMC | 2 | 0x80,
+ KMC_TDEA_192_ENCRYPT = CRYPT_Z990_KMC | 3,
+ KMC_TDEA_192_DECRYPT = CRYPT_Z990_KMC | 3 | 0x80,
+};
+
+/*function codes for KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST) instruction*/
+enum crypt_z990_kimd_func {
+ KIMD_QUERY = CRYPT_Z990_KIMD | 0,
+ KIMD_SHA_1 = CRYPT_Z990_KIMD | 1,
+};
+
+/*function codes for KLMD (COMPUTE LAST MESSAGE DIGEST) instruction*/
+enum crypt_z990_klmd_func {
+ KLMD_QUERY = CRYPT_Z990_KLMD | 0,
+ KLMD_SHA_1 = CRYPT_Z990_KLMD | 1,
+};
+
+/*function codes for KMAC (COMPUTE MESSAGE AUTHENTICATION CODE) instruction*/
+enum crypt_z990_kmac_func {
+ KMAC_QUERY = CRYPT_Z990_KMAC | 0,
+ KMAC_DEA = CRYPT_Z990_KMAC | 1,
+ KMAC_TDEA_128 = CRYPT_Z990_KMAC | 2,
+ KMAC_TDEA_192 = CRYPT_Z990_KMAC | 3
+};
+
+/*status word for z990 crypto instructions' QUERY functions*/
+struct crypt_z990_query_status {
+ u64 high;
+ u64 low;
+};
+
+/*
+ * Standard fixup and ex_table sections for crypt_z990 inline functions.
+ * label 0: the z990 crypto operation
+ * label 1: just after 1 to catch illegal operation exception on non-z990
+ * label 6: the return point after fixup
+ * label 7: set error value if exception _in_ crypto operation
+ * label 8: set error value if illegal operation exception
+ * [ret] is the variable to receive the error code
+ * [ERR] is the error code value
+ */
+#ifndef __s390x__
+#define __crypt_z990_fixup \
+ ".section .fixup,\"ax\" \n" \
+ "7: lhi %0,%h[e1] \n" \
+ " bras 1,9f \n" \
+ " .long 6b \n" \
+ "8: lhi %0,%h[e2] \n" \
+ " bras 1,9f \n" \
+ " .long 6b \n" \
+ "9: l 1,0(1) \n" \
+ " br 1 \n" \
+ ".previous \n" \
+ ".section __ex_table,\"a\" \n" \
+ " .align 4 \n" \
+ " .long 0b,7b \n" \
+ " .long 1b,8b \n" \
+ ".previous"
+#else /* __s390x__ */
+#define __crypt_z990_fixup \
+ ".section .fixup,\"ax\" \n" \
+ "7: lhi %0,%h[e1] \n" \
+ " jg 6b \n" \
+ "8: lhi %0,%h[e2] \n" \
+ " jg 6b \n" \
+ ".previous\n" \
+ ".section __ex_table,\"a\" \n" \
+ " .align 8 \n" \
+ " .quad 0b,7b \n" \
+ " .quad 1b,8b \n" \
+ ".previous"
+#endif /* __s390x__ */
+
+/*
+ * Standard code for setting the result of z990 crypto instructions.
+ * %0: the register which will receive the result
+ * [result]: the register containing the result (e.g. second operand length
+ * to compute number of processed bytes].
+ */
+#ifndef __s390x__
+#define __crypt_z990_set_result \
+ " lr %0,%[result] \n"
+#else /* __s390x__ */
+#define __crypt_z990_set_result \
+ " lgr %0,%[result] \n"
+#endif
+
+/*
+ * Executes the KM (CIPHER MESSAGE) operation of the z990 CPU.
+ * @param func: the function code passed to KM; see crypt_z990_km_func
+ * @param param: address of parameter block; see POP for details on each func
+ * @param dest: address of destination memory area
+ * @param src: address of source memory area
+ * @param src_len: length of src operand in bytes
+ * @returns < zero for failure, 0 for the query func, number of processed bytes
+ * for encryption/decryption funcs
+ */
+static inline int
+crypt_z990_km(long func, void* param, u8* dest, const u8* src, long src_len)
+{
+ register long __func asm("0") = func & CRYPT_Z990_FUNC_MASK;
+ register void* __param asm("1") = param;
+ register u8* __dest asm("4") = dest;
+ register const u8* __src asm("2") = src;
+ register long __src_len asm("3") = src_len;
+ int ret;
+
+ ret = 0;
+ __asm__ __volatile__ (
+ "0: .insn rre,0xB92E0000,%1,%2 \n" //KM opcode
+ "1: brc 1,0b \n" //handle partial completion
+ __crypt_z990_set_result
+ "6: \n"
+ __crypt_z990_fixup
+ : "+d" (ret), "+a" (__dest), "+a" (__src),
+ [result] "+d" (__src_len)
+ : [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func),
+ "a" (__param)
+ : "cc", "memory"
+ );
+ if (ret >= 0 && func & CRYPT_Z990_FUNC_MASK){
+ ret = src_len - ret;
+ }
+ return ret;
+}
+
+/*
+ * Executes the KMC (CIPHER MESSAGE WITH CHAINING) operation of the z990 CPU.
+ * @param func: the function code passed to KM; see crypt_z990_kmc_func
+ * @param param: address of parameter block; see POP for details on each func
+ * @param dest: address of destination memory area
+ * @param src: address of source memory area
+ * @param src_len: length of src operand in bytes
+ * @returns < zero for failure, 0 for the query func, number of processed bytes
+ * for encryption/decryption funcs
+ */
+static inline int
+crypt_z990_kmc(long func, void* param, u8* dest, const u8* src, long src_len)
+{
+ register long __func asm("0") = func & CRYPT_Z990_FUNC_MASK;
+ register void* __param asm("1") = param;
+ register u8* __dest asm("4") = dest;
+ register const u8* __src asm("2") = src;
+ register long __src_len asm("3") = src_len;
+ int ret;
+
+ ret = 0;
+ __asm__ __volatile__ (
+ "0: .insn rre,0xB92F0000,%1,%2 \n" //KMC opcode
+ "1: brc 1,0b \n" //handle partial completion
+ __crypt_z990_set_result
+ "6: \n"
+ __crypt_z990_fixup
+ : "+d" (ret), "+a" (__dest), "+a" (__src),
+ [result] "+d" (__src_len)
+ : [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func),
+ "a" (__param)
+ : "cc", "memory"
+ );
+ if (ret >= 0 && func & CRYPT_Z990_FUNC_MASK){
+ ret = src_len - ret;
+ }
+ return ret;
+}
+
+/*
+ * Executes the KIMD (COMPUTE INTERMEDIATE MESSAGE DIGEST) operation
+ * of the z990 CPU.
+ * @param func: the function code passed to KM; see crypt_z990_kimd_func
+ * @param param: address of parameter block; see POP for details on each func
+ * @param src: address of source memory area
+ * @param src_len: length of src operand in bytes
+ * @returns < zero for failure, 0 for the query func, number of processed bytes
+ * for digest funcs
+ */
+static inline int
+crypt_z990_kimd(long func, void* param, const u8* src, long src_len)
+{
+ register long __func asm("0") = func & CRYPT_Z990_FUNC_MASK;
+ register void* __param asm("1") = param;
+ register const u8* __src asm("2") = src;
+ register long __src_len asm("3") = src_len;
+ int ret;
+
+ ret = 0;
+ __asm__ __volatile__ (
+ "0: .insn rre,0xB93E0000,%1,%1 \n" //KIMD opcode
+ "1: brc 1,0b \n" /*handle partical completion of kimd*/
+ __crypt_z990_set_result
+ "6: \n"
+ __crypt_z990_fixup
+ : "+d" (ret), "+a" (__src), [result] "+d" (__src_len)
+ : [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func),
+ "a" (__param)
+ : "cc", "memory"
+ );
+ if (ret >= 0 && (func & CRYPT_Z990_FUNC_MASK)){
+ ret = src_len - ret;
+ }
+ return ret;
+}
+
+/*
+ * Executes the KLMD (COMPUTE LAST MESSAGE DIGEST) operation of the z990 CPU.
+ * @param func: the function code passed to KM; see crypt_z990_klmd_func
+ * @param param: address of parameter block; see POP for details on each func
+ * @param src: address of source memory area
+ * @param src_len: length of src operand in bytes
+ * @returns < zero for failure, 0 for the query func, number of processed bytes
+ * for digest funcs
+ */
+static inline int
+crypt_z990_klmd(long func, void* param, const u8* src, long src_len)
+{
+ register long __func asm("0") = func & CRYPT_Z990_FUNC_MASK;
+ register void* __param asm("1") = param;
+ register const u8* __src asm("2") = src;
+ register long __src_len asm("3") = src_len;
+ int ret;
+
+ ret = 0;
+ __asm__ __volatile__ (
+ "0: .insn rre,0xB93F0000,%1,%1 \n" //KLMD opcode
+ "1: brc 1,0b \n" /*handle partical completion of klmd*/
+ __crypt_z990_set_result
+ "6: \n"
+ __crypt_z990_fixup
+ : "+d" (ret), "+a" (__src), [result] "+d" (__src_len)
+ : [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func),
+ "a" (__param)
+ : "cc", "memory"
+ );
+ if (ret >= 0 && func & CRYPT_Z990_FUNC_MASK){
+ ret = src_len - ret;
+ }
+ return ret;
+}
+
+/*
+ * Executes the KMAC (COMPUTE MESSAGE AUTHENTICATION CODE) operation
+ * of the z990 CPU.
+ * @param func: the function code passed to KM; see crypt_z990_klmd_func
+ * @param param: address of parameter block; see POP for details on each func
+ * @param src: address of source memory area
+ * @param src_len: length of src operand in bytes
+ * @returns < zero for failure, 0 for the query func, number of processed bytes
+ * for digest funcs
+ */
+static inline int
+crypt_z990_kmac(long func, void* param, const u8* src, long src_len)
+{
+ register long __func asm("0") = func & CRYPT_Z990_FUNC_MASK;
+ register void* __param asm("1") = param;
+ register const u8* __src asm("2") = src;
+ register long __src_len asm("3") = src_len;
+ int ret;
+
+ ret = 0;
+ __asm__ __volatile__ (
+ "0: .insn rre,0xB91E0000,%5,%5 \n" //KMAC opcode
+ "1: brc 1,0b \n" /*handle partical completion of klmd*/
+ __crypt_z990_set_result
+ "6: \n"
+ __crypt_z990_fixup
+ : "+d" (ret), "+a" (__src), [result] "+d" (__src_len)
+ : [e1] "K" (-EFAULT), [e2] "K" (-ENOSYS), "d" (__func),
+ "a" (__param)
+ : "cc", "memory"
+ );
+ if (ret >= 0 && func & CRYPT_Z990_FUNC_MASK){
+ ret = src_len - ret;
+ }
+ return ret;
+}
+
+/**
+ * Tests if a specific z990 crypto function is implemented on the machine.
+ * @param func: the function code of the specific function; 0 if op in general
+ * @return 1 if func available; 0 if func or op in general not available
+ */
+static inline int
+crypt_z990_func_available(int func)
+{
+ int ret;
+
+ struct crypt_z990_query_status status = {
+ .high = 0,
+ .low = 0
+ };
+ switch (func & CRYPT_Z990_OP_MASK){
+ case CRYPT_Z990_KM:
+ ret = crypt_z990_km(KM_QUERY, &status, NULL, NULL, 0);
+ break;
+ case CRYPT_Z990_KMC:
+ ret = crypt_z990_kmc(KMC_QUERY, &status, NULL, NULL, 0);
+ break;
+ case CRYPT_Z990_KIMD:
+ ret = crypt_z990_kimd(KIMD_QUERY, &status, NULL, 0);
+ break;
+ case CRYPT_Z990_KLMD:
+ ret = crypt_z990_klmd(KLMD_QUERY, &status, NULL, 0);
+ break;
+ case CRYPT_Z990_KMAC:
+ ret = crypt_z990_kmac(KMAC_QUERY, &status, NULL, 0);
+ break;
+ default:
+ ret = 0;
+ return ret;
+ }
+ if (ret >= 0){
+ func &= CRYPT_Z990_FUNC_MASK;
+ func &= 0x7f; //mask modifier bit
+ if (func < 64){
+ ret = (status.high >> (64 - func - 1)) & 0x1;
+ } else {
+ ret = (status.low >> (128 - func - 1)) & 0x1;
+ }
+ } else {
+ ret = 0;
+ }
+ return ret;
+}
+
+
+#endif // _CRYPTO_ARCH_S390_CRYPT_Z990_H
--- /dev/null
+/*
+ * Cryptographic API.
+ *
+ * Support for z990 cryptographic instructions.
+ * Testing module for querying processor crypto capabilities.
+ *
+ * Copyright (c) 2003 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ * Author(s): Thomas Spatzier (tspat@de.ibm.com)
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ */
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/kernel.h>
+#include <asm/errno.h>
+#include "crypt_z990.h"
+
+static void
+query_available_functions(void)
+{
+ printk(KERN_INFO "#####################\n");
+ //query available KM functions
+ printk(KERN_INFO "KM_QUERY: %d\n",
+ crypt_z990_func_available(KM_QUERY));
+ printk(KERN_INFO "KM_DEA: %d\n",
+ crypt_z990_func_available(KM_DEA_ENCRYPT));
+ printk(KERN_INFO "KM_TDEA_128: %d\n",
+ crypt_z990_func_available(KM_TDEA_128_ENCRYPT));
+ printk(KERN_INFO "KM_TDEA_192: %d\n",
+ crypt_z990_func_available(KM_TDEA_192_ENCRYPT));
+ //query available KMC functions
+ printk(KERN_INFO "KMC_QUERY: %d\n",
+ crypt_z990_func_available(KMC_QUERY));
+ printk(KERN_INFO "KMC_DEA: %d\n",
+ crypt_z990_func_available(KMC_DEA_ENCRYPT));
+ printk(KERN_INFO "KMC_TDEA_128: %d\n",
+ crypt_z990_func_available(KMC_TDEA_128_ENCRYPT));
+ printk(KERN_INFO "KMC_TDEA_192: %d\n",
+ crypt_z990_func_available(KMC_TDEA_192_ENCRYPT));
+ //query available KIMD fucntions
+ printk(KERN_INFO "KIMD_QUERY: %d\n",
+ crypt_z990_func_available(KIMD_QUERY));
+ printk(KERN_INFO "KIMD_SHA_1: %d\n",
+ crypt_z990_func_available(KIMD_SHA_1));
+ //query available KLMD functions
+ printk(KERN_INFO "KLMD_QUERY: %d\n",
+ crypt_z990_func_available(KLMD_QUERY));
+ printk(KERN_INFO "KLMD_SHA_1: %d\n",
+ crypt_z990_func_available(KLMD_SHA_1));
+ //query available KMAC functions
+ printk(KERN_INFO "KMAC_QUERY: %d\n",
+ crypt_z990_func_available(KMAC_QUERY));
+ printk(KERN_INFO "KMAC_DEA: %d\n",
+ crypt_z990_func_available(KMAC_DEA));
+ printk(KERN_INFO "KMAC_TDEA_128: %d\n",
+ crypt_z990_func_available(KMAC_TDEA_128));
+ printk(KERN_INFO "KMAC_TDEA_192: %d\n",
+ crypt_z990_func_available(KMAC_TDEA_192));
+}
+
+static int
+init(void)
+{
+ struct crypt_z990_query_status status = {
+ .high = 0,
+ .low = 0
+ };
+
+ printk(KERN_INFO "crypt_z990: querying available crypto functions\n");
+ crypt_z990_km(KM_QUERY, &status, NULL, NULL, 0);
+ printk(KERN_INFO "KM: %016llx %016llx\n",
+ (unsigned long long) status.high,
+ (unsigned long long) status.low);
+ status.high = status.low = 0;
+ crypt_z990_kmc(KMC_QUERY, &status, NULL, NULL, 0);
+ printk(KERN_INFO "KMC: %016llx %016llx\n",
+ (unsigned long long) status.high,
+ (unsigned long long) status.low);
+ status.high = status.low = 0;
+ crypt_z990_kimd(KIMD_QUERY, &status, NULL, 0);
+ printk(KERN_INFO "KIMD: %016llx %016llx\n",
+ (unsigned long long) status.high,
+ (unsigned long long) status.low);
+ status.high = status.low = 0;
+ crypt_z990_klmd(KLMD_QUERY, &status, NULL, 0);
+ printk(KERN_INFO "KLMD: %016llx %016llx\n",
+ (unsigned long long) status.high,
+ (unsigned long long) status.low);
+ status.high = status.low = 0;
+ crypt_z990_kmac(KMAC_QUERY, &status, NULL, 0);
+ printk(KERN_INFO "KMAC: %016llx %016llx\n",
+ (unsigned long long) status.high,
+ (unsigned long long) status.low);
+
+ query_available_functions();
+ return -1;
+}
+
+static void __exit
+cleanup(void)
+{
+}
+
+module_init(init);
+module_exit(cleanup);
+
+MODULE_LICENSE("GPL");
--- /dev/null
+/*
+ * Cryptographic API.
+ *
+ * Function for checking keys for the DES and Tripple DES Encryption
+ * algorithms.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+#ifndef __CRYPTO_DES_H__
+#define __CRYPTO_DES_H__
+
+extern int crypto_des_check_key(const u8*, unsigned int, u32*);
+
+#endif //__CRYPTO_DES_H__
--- /dev/null
+/*
+ * Cryptographic API.
+ *
+ * Function for checking keys for the DES and Tripple DES Encryption
+ * algorithms.
+ *
+ * Originally released as descore by Dana L. How <how@isl.stanford.edu>.
+ * Modified by Raimar Falke <rf13@inf.tu-dresden.de> for the Linux-Kernel.
+ * Derived from Cryptoapi and Nettle implementations, adapted for in-place
+ * scatterlist interface. Changed LGPL to GPL per section 3 of the LGPL.
+ *
+ * s390 Version:
+ * Copyright (C) 2003 IBM Deutschland GmbH, IBM Corporation
+ * Author(s): Thomas Spatzier (tspat@de.ibm.com)
+ *
+ * Derived from "crypto/des.c"
+ * Copyright (c) 1992 Dana L. How.
+ * Copyright (c) Raimar Falke <rf13@inf.tu-dresden.de>
+ * Copyright (c) Gisle Sflensminde <gisle@ii.uib.no>
+ * Copyright (C) 2001 Niels Mvller.
+ * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/errno.h>
+#include <linux/crypto.h>
+
+#define ROR(d,c,o) ((d) = (d) >> (c) | (d) << (o))
+
+static const u8 parity[] = {
+ 8,1,0,8,0,8,8,0,0,8,8,0,8,0,2,8,0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,3,
+ 0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8,
+ 0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8,
+ 8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8,0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,
+ 0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8,
+ 8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8,0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,
+ 8,0,0,8,0,8,8,0,0,8,8,0,8,0,0,8,0,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,
+ 4,8,8,0,8,0,0,8,8,0,0,8,0,8,8,0,8,5,0,8,0,8,8,0,0,8,8,0,8,0,6,8,
+};
+
+/*
+ * RFC2451: Weak key checks SHOULD be performed.
+ */
+int
+crypto_des_check_key(const u8 *key, unsigned int keylen, u32 *flags)
+{
+ u32 n, w;
+
+ n = parity[key[0]]; n <<= 4;
+ n |= parity[key[1]]; n <<= 4;
+ n |= parity[key[2]]; n <<= 4;
+ n |= parity[key[3]]; n <<= 4;
+ n |= parity[key[4]]; n <<= 4;
+ n |= parity[key[5]]; n <<= 4;
+ n |= parity[key[6]]; n <<= 4;
+ n |= parity[key[7]];
+ w = 0x88888888L;
+
+ if ((*flags & CRYPTO_TFM_REQ_WEAK_KEY)
+ && !((n - (w >> 3)) & w)) { /* 1 in 10^10 keys passes this test */
+ if (n < 0x41415151) {
+ if (n < 0x31312121) {
+ if (n < 0x14141515) {
+ /* 01 01 01 01 01 01 01 01 */
+ if (n == 0x11111111) goto weak;
+ /* 01 1F 01 1F 01 0E 01 0E */
+ if (n == 0x13131212) goto weak;
+ } else {
+ /* 01 E0 01 E0 01 F1 01 F1 */
+ if (n == 0x14141515) goto weak;
+ /* 01 FE 01 FE 01 FE 01 FE */
+ if (n == 0x16161616) goto weak;
+ }
+ } else {
+ if (n < 0x34342525) {
+ /* 1F 01 1F 01 0E 01 0E 01 */
+ if (n == 0x31312121) goto weak;
+ /* 1F 1F 1F 1F 0E 0E 0E 0E (?) */
+ if (n == 0x33332222) goto weak;
+ } else {
+ /* 1F E0 1F E0 0E F1 0E F1 */
+ if (n == 0x34342525) goto weak;
+ /* 1F FE 1F FE 0E FE 0E FE */
+ if (n == 0x36362626) goto weak;
+ }
+ }
+ } else {
+ if (n < 0x61616161) {
+ if (n < 0x44445555) {
+ /* E0 01 E0 01 F1 01 F1 01 */
+ if (n == 0x41415151) goto weak;
+ /* E0 1F E0 1F F1 0E F1 0E */
+ if (n == 0x43435252) goto weak;
+ } else {
+ /* E0 E0 E0 E0 F1 F1 F1 F1 (?) */
+ if (n == 0x44445555) goto weak;
+ /* E0 FE E0 FE F1 FE F1 FE */
+ if (n == 0x46465656) goto weak;
+ }
+ } else {
+ if (n < 0x64646565) {
+ /* FE 01 FE 01 FE 01 FE 01 */
+ if (n == 0x61616161) goto weak;
+ /* FE 1F FE 1F FE 0E FE 0E */
+ if (n == 0x63636262) goto weak;
+ } else {
+ /* FE E0 FE E0 FE F1 FE F1 */
+ if (n == 0x64646565) goto weak;
+ /* FE FE FE FE FE FE FE FE */
+ if (n == 0x66666666) goto weak;
+ }
+ }
+ }
+ }
+ return 0;
+weak:
+ *flags |= CRYPTO_TFM_RES_WEAK_KEY;
+ return -EINVAL;
+}
+
+EXPORT_SYMBOL(crypto_des_check_key);
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("Key Check function for DES & DES3 Cipher Algorithms");
--- /dev/null
+/*
+ * Cryptographic API.
+ *
+ * z990 implementation of the DES Cipher Algorithm.
+ *
+ * Copyright (c) 2003 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ * Author(s): Thomas Spatzier (tspat@de.ibm.com)
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ */
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/mm.h>
+#include <linux/errno.h>
+#include <asm/scatterlist.h>
+#include <linux/crypto.h>
+#include "crypt_z990.h"
+#include "crypto_des.h"
+
+#define DES_BLOCK_SIZE 8
+#define DES_KEY_SIZE 8
+
+#define DES3_128_KEY_SIZE (2 * DES_KEY_SIZE)
+#define DES3_128_BLOCK_SIZE DES_BLOCK_SIZE
+
+#define DES3_192_KEY_SIZE (3 * DES_KEY_SIZE)
+#define DES3_192_BLOCK_SIZE DES_BLOCK_SIZE
+
+struct crypt_z990_des_ctx {
+ u8 iv[DES_BLOCK_SIZE];
+ u8 key[DES_KEY_SIZE];
+};
+
+struct crypt_z990_des3_128_ctx {
+ u8 iv[DES_BLOCK_SIZE];
+ u8 key[DES3_128_KEY_SIZE];
+};
+
+struct crypt_z990_des3_192_ctx {
+ u8 iv[DES_BLOCK_SIZE];
+ u8 key[DES3_192_KEY_SIZE];
+};
+
+static int
+des_setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *flags)
+{
+ struct crypt_z990_des_ctx *dctx;
+ int ret;
+
+ dctx = ctx;
+ //test if key is valid (not a weak key)
+ ret = crypto_des_check_key(key, keylen, flags);
+ if (ret == 0){
+ memcpy(dctx->key, key, keylen);
+ }
+ return ret;
+}
+
+
+static void
+des_encrypt(void *ctx, u8 *dst, const u8 *src)
+{
+ struct crypt_z990_des_ctx *dctx;
+
+ dctx = ctx;
+ crypt_z990_km(KM_DEA_ENCRYPT, dctx->key, dst, src, DES_BLOCK_SIZE);
+}
+
+static void
+des_decrypt(void *ctx, u8 *dst, const u8 *src)
+{
+ struct crypt_z990_des_ctx *dctx;
+
+ dctx = ctx;
+ crypt_z990_km(KM_DEA_DECRYPT, dctx->key, dst, src, DES_BLOCK_SIZE);
+}
+
+static struct crypto_alg des_alg = {
+ .cra_name = "des",
+ .cra_flags = CRYPTO_ALG_TYPE_CIPHER,
+ .cra_blocksize = DES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct crypt_z990_des_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_list = LIST_HEAD_INIT(des_alg.cra_list),
+ .cra_u = { .cipher = {
+ .cia_min_keysize = DES_KEY_SIZE,
+ .cia_max_keysize = DES_KEY_SIZE,
+ .cia_setkey = des_setkey,
+ .cia_encrypt = des_encrypt,
+ .cia_decrypt = des_decrypt } }
+};
+
+/*
+ * RFC2451:
+ *
+ * For DES-EDE3, there is no known need to reject weak or
+ * complementation keys. Any weakness is obviated by the use of
+ * multiple keys.
+ *
+ * However, if the two independent 64-bit keys are equal,
+ * then the DES3 operation is simply the same as DES.
+ * Implementers MUST reject keys that exhibit this property.
+ *
+ */
+static int
+des3_128_setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *flags)
+{
+ int i, ret;
+ struct crypt_z990_des3_128_ctx *dctx;
+ const u8* temp_key = key;
+
+ dctx = ctx;
+ if (!(memcmp(key, &key[DES_KEY_SIZE], DES_KEY_SIZE))) {
+
+ *flags |= CRYPTO_TFM_RES_BAD_KEY_SCHED;
+ return -EINVAL;
+ }
+ for (i = 0; i < 2; i++, temp_key += DES_KEY_SIZE) {
+ ret = crypto_des_check_key(temp_key, DES_KEY_SIZE, flags);
+ if (ret < 0)
+ return ret;
+ }
+ memcpy(dctx->key, key, keylen);
+ return 0;
+}
+
+static void
+des3_128_encrypt(void *ctx, u8 *dst, const u8 *src)
+{
+ struct crypt_z990_des3_128_ctx *dctx;
+
+ dctx = ctx;
+ crypt_z990_km(KM_TDEA_128_ENCRYPT, dctx->key, dst, (void*)src,
+ DES3_128_BLOCK_SIZE);
+}
+
+static void
+des3_128_decrypt(void *ctx, u8 *dst, const u8 *src)
+{
+ struct crypt_z990_des3_128_ctx *dctx;
+
+ dctx = ctx;
+ crypt_z990_km(KM_TDEA_128_DECRYPT, dctx->key, dst, (void*)src,
+ DES3_128_BLOCK_SIZE);
+}
+
+static struct crypto_alg des3_128_alg = {
+ .cra_name = "des3_ede128",
+ .cra_flags = CRYPTO_ALG_TYPE_CIPHER,
+ .cra_blocksize = DES3_128_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct crypt_z990_des3_128_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_list = LIST_HEAD_INIT(des3_128_alg.cra_list),
+ .cra_u = { .cipher = {
+ .cia_min_keysize = DES3_128_KEY_SIZE,
+ .cia_max_keysize = DES3_128_KEY_SIZE,
+ .cia_setkey = des3_128_setkey,
+ .cia_encrypt = des3_128_encrypt,
+ .cia_decrypt = des3_128_decrypt } }
+};
+
+/*
+ * RFC2451:
+ *
+ * For DES-EDE3, there is no known need to reject weak or
+ * complementation keys. Any weakness is obviated by the use of
+ * multiple keys.
+ *
+ * However, if the first two or last two independent 64-bit keys are
+ * equal (k1 == k2 or k2 == k3), then the DES3 operation is simply the
+ * same as DES. Implementers MUST reject keys that exhibit this
+ * property.
+ *
+ */
+static int
+des3_192_setkey(void *ctx, const u8 *key, unsigned int keylen, u32 *flags)
+{
+ int i, ret;
+ struct crypt_z990_des3_192_ctx *dctx;
+ const u8* temp_key;
+
+ dctx = ctx;
+ temp_key = key;
+ if (!(memcmp(key, &key[DES_KEY_SIZE], DES_KEY_SIZE) &&
+ memcmp(&key[DES_KEY_SIZE], &key[DES_KEY_SIZE * 2],
+ DES_KEY_SIZE))) {
+
+ *flags |= CRYPTO_TFM_RES_BAD_KEY_SCHED;
+ return -EINVAL;
+ }
+ for (i = 0; i < 3; i++, temp_key += DES_KEY_SIZE) {
+ ret = crypto_des_check_key(temp_key, DES_KEY_SIZE, flags);
+ if (ret < 0){
+ return ret;
+ }
+ }
+ memcpy(dctx->key, key, keylen);
+ return 0;
+}
+
+static void
+des3_192_encrypt(void *ctx, u8 *dst, const u8 *src)
+{
+ struct crypt_z990_des3_192_ctx *dctx;
+
+ dctx = ctx;
+ crypt_z990_km(KM_TDEA_192_ENCRYPT, dctx->key, dst, (void*)src,
+ DES3_192_BLOCK_SIZE);
+}
+
+static void
+des3_192_decrypt(void *ctx, u8 *dst, const u8 *src)
+{
+ struct crypt_z990_des3_192_ctx *dctx;
+
+ dctx = ctx;
+ crypt_z990_km(KM_TDEA_192_DECRYPT, dctx->key, dst, (void*)src,
+ DES3_192_BLOCK_SIZE);
+}
+
+static struct crypto_alg des3_192_alg = {
+ .cra_name = "des3_ede",
+ .cra_flags = CRYPTO_ALG_TYPE_CIPHER,
+ .cra_blocksize = DES3_192_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct crypt_z990_des3_192_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_list = LIST_HEAD_INIT(des3_192_alg.cra_list),
+ .cra_u = { .cipher = {
+ .cia_min_keysize = DES3_192_KEY_SIZE,
+ .cia_max_keysize = DES3_192_KEY_SIZE,
+ .cia_setkey = des3_192_setkey,
+ .cia_encrypt = des3_192_encrypt,
+ .cia_decrypt = des3_192_decrypt } }
+};
+
+
+
+static int
+init(void)
+{
+ int ret;
+
+ if (!crypt_z990_func_available(KM_DEA_ENCRYPT) ||
+ !crypt_z990_func_available(KM_TDEA_128_ENCRYPT) ||
+ !crypt_z990_func_available(KM_TDEA_192_ENCRYPT)){
+ return -ENOSYS;
+ }
+
+ ret = 0;
+ ret |= (crypto_register_alg(&des_alg) == 0)? 0:1;
+ ret |= (crypto_register_alg(&des3_128_alg) == 0)? 0:2;
+ ret |= (crypto_register_alg(&des3_192_alg) == 0)? 0:4;
+ if (ret){
+ crypto_unregister_alg(&des3_192_alg);
+ crypto_unregister_alg(&des3_128_alg);
+ crypto_unregister_alg(&des_alg);
+ return -EEXIST;
+ }
+
+ printk(KERN_INFO "crypt_z990: des_z990 loaded.\n");
+ return 0;
+}
+
+static void __exit
+fini(void)
+{
+ crypto_unregister_alg(&des3_192_alg);
+ crypto_unregister_alg(&des3_128_alg);
+ crypto_unregister_alg(&des_alg);
+}
+
+module_init(init);
+module_exit(fini);
+
+MODULE_ALIAS("des");
+MODULE_ALIAS("des3_ede");
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("DES & Triple DES EDE Cipher Algorithms");
--- /dev/null
+/*
+ * Cryptographic API.
+ *
+ * z990 implementation of the SHA1 Secure Hash Algorithm.
+ *
+ * Derived from cryptoapi implementation, adapted for in-place
+ * scatterlist interface. Originally based on the public domain
+ * implementation written by Steve Reid.
+ *
+ * s390 Version:
+ * Copyright (C) 2003 IBM Deutschland GmbH, IBM Corporation
+ * Author(s): Thomas Spatzier (tspat@de.ibm.com)
+ *
+ * Derived from "crypto/sha1.c"
+ * Copyright (c) Alan Smithee.
+ * Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
+ * Copyright (c) Jean-Francois Dive <jef@linuxbe.org>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the Free
+ * Software Foundation; either version 2 of the License, or (at your option)
+ * any later version.
+ *
+ */
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/mm.h>
+#include <linux/crypto.h>
+#include <asm/scatterlist.h>
+#include <asm/byteorder.h>
+#include "crypt_z990.h"
+
+#define SHA1_DIGEST_SIZE 20
+#define SHA1_BLOCK_SIZE 64
+
+struct crypt_z990_sha1_ctx {
+ u64 count;
+ u32 state[5];
+ u32 buf_len;
+ u8 buffer[2 * SHA1_BLOCK_SIZE];
+};
+
+static void
+sha1_init(void *ctx)
+{
+ static const struct crypt_z990_sha1_ctx initstate = {
+ .state = {
+ 0x67452301,
+ 0xEFCDAB89,
+ 0x98BADCFE,
+ 0x10325476,
+ 0xC3D2E1F0
+ },
+ };
+ memcpy(ctx, &initstate, sizeof(initstate));
+}
+
+static void
+sha1_update(void *ctx, const u8 *data, unsigned int len)
+{
+ struct crypt_z990_sha1_ctx *sctx;
+ long imd_len;
+
+ sctx = ctx;
+ sctx->count += len * 8; //message bit length
+
+ //anything in buffer yet? -> must be completed
+ if (sctx->buf_len && (sctx->buf_len + len) >= SHA1_BLOCK_SIZE) {
+ //complete full block and hash
+ memcpy(sctx->buffer + sctx->buf_len, data,
+ SHA1_BLOCK_SIZE - sctx->buf_len);
+ crypt_z990_kimd(KIMD_SHA_1, sctx->state, sctx->buffer,
+ SHA1_BLOCK_SIZE);
+ data += SHA1_BLOCK_SIZE - sctx->buf_len;
+ len -= SHA1_BLOCK_SIZE - sctx->buf_len;
+ sctx->buf_len = 0;
+ }
+
+ //rest of data contains full blocks?
+ imd_len = len & ~0x3ful;
+ if (imd_len){
+ crypt_z990_kimd(KIMD_SHA_1, sctx->state, data, imd_len);
+ data += imd_len;
+ len -= imd_len;
+ }
+ //anything left? store in buffer
+ if (len){
+ memcpy(sctx->buffer + sctx->buf_len , data, len);
+ sctx->buf_len += len;
+ }
+}
+
+
+static void
+pad_message(struct crypt_z990_sha1_ctx* sctx)
+{
+ int index;
+
+ index = sctx->buf_len;
+ sctx->buf_len = (sctx->buf_len < 56)?
+ SHA1_BLOCK_SIZE:2 * SHA1_BLOCK_SIZE;
+ //start pad with 1
+ sctx->buffer[index] = 0x80;
+ //pad with zeros
+ index++;
+ memset(sctx->buffer + index, 0x00, sctx->buf_len - index);
+ //append length
+ memcpy(sctx->buffer + sctx->buf_len - 8, &sctx->count,
+ sizeof sctx->count);
+}
+
+/* Add padding and return the message digest. */
+static void
+sha1_final(void* ctx, u8 *out)
+{
+ struct crypt_z990_sha1_ctx *sctx = ctx;
+
+ //must perform manual padding
+ pad_message(sctx);
+ crypt_z990_kimd(KIMD_SHA_1, sctx->state, sctx->buffer, sctx->buf_len);
+ //copy digest to out
+ memcpy(out, sctx->state, SHA1_DIGEST_SIZE);
+ /* Wipe context */
+ memset(sctx, 0, sizeof *sctx);
+}
+
+static struct crypto_alg alg = {
+ .cra_name = "sha1",
+ .cra_flags = CRYPTO_ALG_TYPE_DIGEST,
+ .cra_blocksize = SHA1_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct crypt_z990_sha1_ctx),
+ .cra_module = THIS_MODULE,
+ .cra_list = LIST_HEAD_INIT(alg.cra_list),
+ .cra_u = { .digest = {
+ .dia_digestsize = SHA1_DIGEST_SIZE,
+ .dia_init = sha1_init,
+ .dia_update = sha1_update,
+ .dia_final = sha1_final } }
+};
+
+static int
+init(void)
+{
+ int ret = -ENOSYS;
+
+ if (crypt_z990_func_available(KIMD_SHA_1)){
+ ret = crypto_register_alg(&alg);
+ if (ret == 0){
+ printk(KERN_INFO "crypt_z990: sha1_z990 loaded.\n");
+ }
+ }
+ return ret;
+}
+
+static void __exit
+fini(void)
+{
+ crypto_unregister_alg(&alg);
+}
+
+module_init(init);
+module_exit(fini);
+
+MODULE_ALIAS("sha1");
+
+MODULE_LICENSE("GPL");
+MODULE_DESCRIPTION("SHA1 Secure Hash Algorithm");
# CONFIG_CRYPTO_MD4 is not set
# CONFIG_CRYPTO_MD5 is not set
# CONFIG_CRYPTO_SHA1 is not set
+# CONFIG_CRYPTO_SHA1_Z990 is not set
# CONFIG_CRYPTO_SHA256 is not set
# CONFIG_CRYPTO_SHA512 is not set
# CONFIG_CRYPTO_DES is not set
+# CONFIG_CRYPTO_DES_Z990 is not set
# CONFIG_CRYPTO_BLOWFISH is not set
# CONFIG_CRYPTO_TWOFISH is not set
# CONFIG_CRYPTO_SERPENT is not set
help
SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).
+config CRYPTO_SHA1_Z990
+ tristate "SHA1 digest algorithm for IBM zSeries z990"
+ depends on CRYPTO && ARCH_S390
+ help
+ SHA-1 secure hash standard (FIPS 180-1/DFIPS 180-2).
+
config CRYPTO_SHA256
tristate "SHA256 digest algorithm"
depends on CRYPTO
help
DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).
+config CRYPTO_DES_Z990
+ tristate "DES and Triple DES cipher algorithms for IBM zSeries z990"
+ depends on CRYPTO && ARCH_S390
+ help
+ DES cipher algorithm (FIPS 46-2), and Triple DES EDE (FIPS 46-3).
+
config CRYPTO_BLOWFISH
tristate "Blowfish cipher algorithm"
depends on CRYPTO
projects / linux / commitdiff