X-Git-Url: https://git.openssl.org/gitweb/?a=blobdiff_plain;f=crypto%2Fevp%2Fe_rc2.c;h=8a56723c7e3dd6d3efba4fe033c6038e44fdc2b7;hb=29f4c357f045562d7eb7837ae890efc1bf4809a2;hp=76952646caa70a5fa8d1080abb4ded27f3b6821d;hpb=135883505078a868349e0a3c24514099e3cb2dac;p=openssl.git diff --git a/crypto/evp/e_rc2.c b/crypto/evp/e_rc2.c index 76952646ca..8a56723c7e 100644 --- a/crypto/evp/e_rc2.c +++ b/crypto/evp/e_rc2.c @@ -1,25 +1,24 @@ -/* crypto/evp/e_rc2.c */ /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. - * + * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). - * + * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. - * + * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: @@ -34,10 +33,10 @@ * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). - * 4. If you include any Windows specific code (or a derivative thereof) from + * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" - * + * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE @@ -49,174 +48,189 @@ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. - * + * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */ +#include +#include "internal/cryptlib.h" + #ifndef OPENSSL_NO_RC2 -#include -#include "cryptlib.h" -#include -#include -#include "evp_locl.h" +# include +# include +# include "internal/evp_int.h" +# include static int rc2_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, - const unsigned char *iv,int enc); + const unsigned char *iv, int enc); static int rc2_meth_to_magic(EVP_CIPHER_CTX *ctx); static int rc2_magic_to_meth(int i); static int rc2_set_asn1_type_and_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type); static int rc2_get_asn1_type_and_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type); static int rc2_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr); -IMPLEMENT_BLOCK_CIPHER(rc2, rc2.ks, RC2, rc2, NID_rc2, - 8, - EVP_RC2_KEY_SIZE, 8, - EVP_CIPH_VARIABLE_LENGTH | EVP_CIPH_CTRL_INIT, - rc2_init_key, NULL, - rc2_set_asn1_type_and_iv, rc2_get_asn1_type_and_iv, - rc2_ctrl) - -#define RC2_40_MAGIC 0xa0 -#define RC2_64_MAGIC 0x78 -#define RC2_128_MAGIC 0x3a - -static const EVP_CIPHER r2_64_cbc_cipher= - { - NID_rc2_64_cbc, - 8,8 /* 64 bit */,8, - EVP_CIPH_CBC_MODE | EVP_CIPH_VARIABLE_LENGTH | EVP_CIPH_CTRL_INIT, - rc2_init_key, - rc2_cbc_cipher, - NULL, - sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+ - sizeof((((EVP_CIPHER_CTX *)NULL)->c.rc2)), - rc2_set_asn1_type_and_iv, - rc2_get_asn1_type_and_iv, - rc2_ctrl, - NULL - }; - -static const EVP_CIPHER r2_40_cbc_cipher= - { - NID_rc2_40_cbc, - 8,5 /* 40 bit */,8, - EVP_CIPH_CBC_MODE | EVP_CIPH_VARIABLE_LENGTH | EVP_CIPH_CTRL_INIT, - rc2_init_key, - rc2_cbc_cipher, - NULL, - sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+ - sizeof((((EVP_CIPHER_CTX *)NULL)->c.rc2)), - rc2_set_asn1_type_and_iv, - rc2_get_asn1_type_and_iv, - rc2_ctrl, - NULL - }; +typedef struct { + int key_bits; /* effective key bits */ + RC2_KEY ks; /* key schedule */ +} EVP_RC2_KEY; + +# define data(ctx) EVP_C_DATA(EVP_RC2_KEY,ctx) + +IMPLEMENT_BLOCK_CIPHER(rc2, ks, RC2, EVP_RC2_KEY, NID_rc2, + 8, + RC2_KEY_LENGTH, 8, 64, + EVP_CIPH_VARIABLE_LENGTH | EVP_CIPH_CTRL_INIT, + rc2_init_key, NULL, + rc2_set_asn1_type_and_iv, rc2_get_asn1_type_and_iv, + rc2_ctrl) +# define RC2_40_MAGIC 0xa0 +# define RC2_64_MAGIC 0x78 +# define RC2_128_MAGIC 0x3a +static const EVP_CIPHER r2_64_cbc_cipher = { + NID_rc2_64_cbc, + 8, 8 /* 64 bit */ , 8, + EVP_CIPH_CBC_MODE | EVP_CIPH_VARIABLE_LENGTH | EVP_CIPH_CTRL_INIT, + rc2_init_key, + rc2_cbc_cipher, + NULL, + sizeof(EVP_RC2_KEY), + rc2_set_asn1_type_and_iv, + rc2_get_asn1_type_and_iv, + rc2_ctrl, + NULL +}; + +static const EVP_CIPHER r2_40_cbc_cipher = { + NID_rc2_40_cbc, + 8, 5 /* 40 bit */ , 8, + EVP_CIPH_CBC_MODE | EVP_CIPH_VARIABLE_LENGTH | EVP_CIPH_CTRL_INIT, + rc2_init_key, + rc2_cbc_cipher, + NULL, + sizeof(EVP_RC2_KEY), + rc2_set_asn1_type_and_iv, + rc2_get_asn1_type_and_iv, + rc2_ctrl, + NULL +}; const EVP_CIPHER *EVP_rc2_64_cbc(void) - { - return(&r2_64_cbc_cipher); - } +{ + return (&r2_64_cbc_cipher); +} const EVP_CIPHER *EVP_rc2_40_cbc(void) - { - return(&r2_40_cbc_cipher); - } - +{ + return (&r2_40_cbc_cipher); +} + static int rc2_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, - const unsigned char *iv, int enc) - { - RC2_set_key(&(ctx->c.rc2.ks),EVP_CIPHER_CTX_key_length(ctx), - key,ctx->c.rc2.key_bits); - return 1; - } + const unsigned char *iv, int enc) +{ + RC2_set_key(&data(ctx)->ks, EVP_CIPHER_CTX_key_length(ctx), + key, data(ctx)->key_bits); + return 1; +} static int rc2_meth_to_magic(EVP_CIPHER_CTX *e) - { - int i; - - EVP_CIPHER_CTX_ctrl(e, EVP_CTRL_GET_RC2_KEY_BITS, 0, &i); - if (i == 128) return(RC2_128_MAGIC); - else if (i == 64) return(RC2_64_MAGIC); - else if (i == 40) return(RC2_40_MAGIC); - else return(0); - } +{ + int i; + + EVP_CIPHER_CTX_ctrl(e, EVP_CTRL_GET_RC2_KEY_BITS, 0, &i); + if (i == 128) + return (RC2_128_MAGIC); + else if (i == 64) + return (RC2_64_MAGIC); + else if (i == 40) + return (RC2_40_MAGIC); + else + return (0); +} static int rc2_magic_to_meth(int i) - { - if (i == RC2_128_MAGIC) return 128; - else if (i == RC2_64_MAGIC) return 64; - else if (i == RC2_40_MAGIC) return 40; - else - { - EVPerr(EVP_F_RC2_MAGIC_TO_METH,EVP_R_UNSUPPORTED_KEY_SIZE); - return(0); - } - } +{ + if (i == RC2_128_MAGIC) + return 128; + else if (i == RC2_64_MAGIC) + return 64; + else if (i == RC2_40_MAGIC) + return 40; + else { + EVPerr(EVP_F_RC2_MAGIC_TO_METH, EVP_R_UNSUPPORTED_KEY_SIZE); + return (0); + } +} static int rc2_get_asn1_type_and_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type) - { - long num=0; - int i=0,l; - int key_bits; - unsigned char iv[EVP_MAX_IV_LENGTH]; - - if (type != NULL) - { - l=EVP_CIPHER_CTX_iv_length(c); - i=ASN1_TYPE_get_int_octetstring(type,&num,iv,l); - if (i != l) - return(-1); - key_bits =rc2_magic_to_meth((int)num); - if (!key_bits) - return(-1); - if(i > 0) EVP_CipherInit(c, NULL, NULL, iv, -1); - EVP_CIPHER_CTX_ctrl(c, EVP_CTRL_SET_RC2_KEY_BITS, key_bits, NULL); - EVP_CIPHER_CTX_set_key_length(c, key_bits / 8); - } - return(i); - } +{ + long num = 0; + int i = 0; + int key_bits; + unsigned int l; + unsigned char iv[EVP_MAX_IV_LENGTH]; + + if (type != NULL) { + l = EVP_CIPHER_CTX_iv_length(c); + OPENSSL_assert(l <= sizeof(iv)); + i = ASN1_TYPE_get_int_octetstring(type, &num, iv, l); + if (i != (int)l) + return (-1); + key_bits = rc2_magic_to_meth((int)num); + if (!key_bits) + return (-1); + if (i > 0 && !EVP_CipherInit_ex(c, NULL, NULL, NULL, iv, -1)) + return -1; + EVP_CIPHER_CTX_ctrl(c, EVP_CTRL_SET_RC2_KEY_BITS, key_bits, NULL); + EVP_CIPHER_CTX_set_key_length(c, key_bits / 8); + } + return (i); +} static int rc2_set_asn1_type_and_iv(EVP_CIPHER_CTX *c, ASN1_TYPE *type) - { - long num; - int i=0,j; - - if (type != NULL) - { - num=rc2_meth_to_magic(c); - j=EVP_CIPHER_CTX_iv_length(c); - i=ASN1_TYPE_set_int_octetstring(type,num,c->oiv,j); - } - return(i); - } +{ + long num; + int i = 0, j; + + if (type != NULL) { + num = rc2_meth_to_magic(c); + j = EVP_CIPHER_CTX_iv_length(c); + i = ASN1_TYPE_set_int_octetstring(type, num, + (unsigned char *)EVP_CIPHER_CTX_original_iv(c), + j); + } + return (i); +} static int rc2_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) - { - switch(type) { - - case EVP_CTRL_INIT: - c->c.rc2.key_bits = EVP_CIPHER_CTX_key_length(c) * 8; - return 1; - - case EVP_CTRL_GET_RC2_KEY_BITS: - *(int *)ptr = c->c.rc2.key_bits; - return 1; - - - case EVP_CTRL_SET_RC2_KEY_BITS: - if(arg > 0) { - c->c.rc2.key_bits = arg; - return 1; - } - return 0; - - default: - return -1; - } - } +{ + switch (type) { + case EVP_CTRL_INIT: + data(c)->key_bits = EVP_CIPHER_CTX_key_length(c) * 8; + return 1; + + case EVP_CTRL_GET_RC2_KEY_BITS: + *(int *)ptr = data(c)->key_bits; + return 1; + + case EVP_CTRL_SET_RC2_KEY_BITS: + if (arg > 0) { + data(c)->key_bits = arg; + return 1; + } + return 0; +# ifdef PBE_PRF_TEST + case EVP_CTRL_PBE_PRF_NID: + *(int *)ptr = NID_hmacWithMD5; + return 1; +# endif + + default: + return -1; + } +} #endif