X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fevp%2Fe_des3.c;h=8b6c2b590dde884c8647f97cd0840230a1bdc10b;hp=059ad77118c22858b4150b64f201a5105aedba2a;hb=ecdd0ff733985fb573d687fe85fa533f62f6cfd8;hpb=b444ac3e6f04aec13aa0c19983291b0326feb7f9 diff --git a/crypto/evp/e_des3.c b/crypto/evp/e_des3.c index 059ad77118..8b6c2b590d 100644 --- a/crypto/evp/e_des3.c +++ b/crypto/evp/e_des3.c @@ -5,21 +5,21 @@ * 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 +34,10 @@ * 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 @@ -49,7 +49,7 @@ * 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 @@ -57,256 +57,401 @@ */ #include -#include "cryptlib.h" +#include "internal/cryptlib.h" #ifndef OPENSSL_NO_DES -#include -#include -#include "evp_locl.h" -#include -#include +# include +# include +# include "internal/evp_int.h" +# include +# include + +typedef struct { + union { + double align; + DES_key_schedule ks[3]; + } ks; + union { + void (*cbc) (const void *, void *, size_t, const void *, void *); + } stream; +} DES_EDE_KEY; +# define ks1 ks.ks[0] +# define ks2 ks.ks[1] +# define ks3 ks.ks[2] + +# if defined(AES_ASM) && (defined(__sparc) || defined(__sparc__)) +/* ---------^^^ this is not a typo, just a way to detect that + * assembler support was in general requested... */ +# include "sparc_arch.h" + +extern unsigned int OPENSSL_sparcv9cap_P[]; + +# define SPARC_DES_CAPABLE (OPENSSL_sparcv9cap_P[1] & CFR_DES) + +void des_t4_key_expand(const void *key, DES_key_schedule *ks); +void des_t4_ede3_cbc_encrypt(const void *inp, void *out, size_t len, + DES_key_schedule *ks, unsigned char iv[8]); +void des_t4_ede3_cbc_decrypt(const void *inp, void *out, size_t len, + DES_key_schedule *ks, unsigned char iv[8]); +# endif static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, - const unsigned char *iv,int enc); + const unsigned char *iv, int enc); static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, - const unsigned char *iv,int enc); + const unsigned char *iv, int enc); static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr); -typedef struct - { - DES_key_schedule ks1;/* key schedule */ - DES_key_schedule ks2;/* key schedule (for ede) */ - DES_key_schedule ks3;/* key schedule (for ede3) */ - } DES_EDE_KEY; +# define data(ctx) EVP_C_DATA(DES_EDE_KEY,ctx) -#define data(ctx) ((DES_EDE_KEY *)(ctx)->cipher_data) - -/* Because of various casts and different args can't use IMPLEMENT_BLOCK_CIPHER */ +/* + * Because of various casts and different args can't use + * IMPLEMENT_BLOCK_CIPHER + */ static int des_ede_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, - const unsigned char *in, size_t inl) + const unsigned char *in, size_t inl) { - BLOCK_CIPHER_ecb_loop() - DES_ecb3_encrypt((const_DES_cblock *)(in + i), - (DES_cblock *)(out + i), - &data(ctx)->ks1, &data(ctx)->ks2, - &data(ctx)->ks3, - ctx->encrypt); - return 1; + BLOCK_CIPHER_ecb_loop() + DES_ecb3_encrypt((const_DES_cblock *)(in + i), + (DES_cblock *)(out + i), + &data(ctx)->ks1, &data(ctx)->ks2, + &data(ctx)->ks3, EVP_CIPHER_CTX_encrypting(ctx)); + return 1; } static int des_ede_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, - const unsigned char *in, size_t inl) + const unsigned char *in, size_t inl) { - if (inl>=EVP_MAXCHUNK) - { - DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK, - &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3, - (DES_cblock *)ctx->iv, &ctx->num); - inl-=EVP_MAXCHUNK; - in +=EVP_MAXCHUNK; - out+=EVP_MAXCHUNK; - } - if (inl) - DES_ede3_ofb64_encrypt(in, out, (long)inl, - &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3, - (DES_cblock *)ctx->iv, &ctx->num); - - return 1; + while (inl >= EVP_MAXCHUNK) { + int num = EVP_CIPHER_CTX_num(ctx); + DES_ede3_ofb64_encrypt(in, out, (long)EVP_MAXCHUNK, + &data(ctx)->ks1, &data(ctx)->ks2, + &data(ctx)->ks3, + (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), + &num); + EVP_CIPHER_CTX_set_num(ctx, num); + inl -= EVP_MAXCHUNK; + in += EVP_MAXCHUNK; + out += EVP_MAXCHUNK; + } + if (inl) { + int num = EVP_CIPHER_CTX_num(ctx); + DES_ede3_ofb64_encrypt(in, out, (long)inl, + &data(ctx)->ks1, &data(ctx)->ks2, + &data(ctx)->ks3, + (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), + &num); + EVP_CIPHER_CTX_set_num(ctx, num); + } + return 1; } static int des_ede_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, - const unsigned char *in, size_t inl) + const unsigned char *in, size_t inl) { -#ifdef KSSL_DEBUG - { - int i; - char *cp; - printf("des_ede_cbc_cipher(ctx=%lx, buflen=%d)\n", ctx, ctx->buf_len); - printf("\t iv= "); - for(i=0;i<8;i++) - printf("%02X",ctx->iv[i]); - printf("\n"); - } -#endif /* KSSL_DEBUG */ - if (inl>=EVP_MAXCHUNK) - { - DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK, - &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3, - (DES_cblock *)ctx->iv, ctx->encrypt); - inl-=EVP_MAXCHUNK; - in +=EVP_MAXCHUNK; - out+=EVP_MAXCHUNK; - } - if (inl) - DES_ede3_cbc_encrypt(in, out, (long)inl, - &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3, - (DES_cblock *)ctx->iv, ctx->encrypt); - return 1; + DES_EDE_KEY *dat = data(ctx); + + if (dat->stream.cbc) { + (*dat->stream.cbc) (in, out, inl, &dat->ks, EVP_CIPHER_CTX_iv_noconst(ctx)); + return 1; + } + + while (inl >= EVP_MAXCHUNK) { + DES_ede3_cbc_encrypt(in, out, (long)EVP_MAXCHUNK, + &dat->ks1, &dat->ks2, &dat->ks3, + (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx)); + inl -= EVP_MAXCHUNK; + in += EVP_MAXCHUNK; + out += EVP_MAXCHUNK; + } + if (inl) + DES_ede3_cbc_encrypt(in, out, (long)inl, + &dat->ks1, &dat->ks2, &dat->ks3, + (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), EVP_CIPHER_CTX_encrypting(ctx)); + return 1; } static int des_ede_cfb64_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, - const unsigned char *in, size_t inl) + const unsigned char *in, size_t inl) { - if (inl>=EVP_MAXCHUNK) - { - DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK, - &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3, - (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt); - inl-=EVP_MAXCHUNK; - in +=EVP_MAXCHUNK; - out+=EVP_MAXCHUNK; - } - if (inl) - DES_ede3_cfb64_encrypt(in, out, (long)inl, - &data(ctx)->ks1, &data(ctx)->ks2, &data(ctx)->ks3, - (DES_cblock *)ctx->iv, &ctx->num, ctx->encrypt); - return 1; + while (inl >= EVP_MAXCHUNK) { + int num = EVP_CIPHER_CTX_num(ctx); + DES_ede3_cfb64_encrypt(in, out, (long)EVP_MAXCHUNK, + &data(ctx)->ks1, &data(ctx)->ks2, + &data(ctx)->ks3, + (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), + &num, EVP_CIPHER_CTX_encrypting(ctx)); + EVP_CIPHER_CTX_set_num(ctx, num); + inl -= EVP_MAXCHUNK; + in += EVP_MAXCHUNK; + out += EVP_MAXCHUNK; + } + if (inl) { + int num = EVP_CIPHER_CTX_num(ctx); + DES_ede3_cfb64_encrypt(in, out, (long)inl, + &data(ctx)->ks1, &data(ctx)->ks2, + &data(ctx)->ks3, + (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), + &num, EVP_CIPHER_CTX_encrypting(ctx)); + EVP_CIPHER_CTX_set_num(ctx, num); + } + return 1; } -/* Although we have a CFB-r implementation for 3-DES, it doesn't pack the right - way, so wrap it here */ +/* + * Although we have a CFB-r implementation for 3-DES, it doesn't pack the + * right way, so wrap it here + */ static int des_ede3_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, - const unsigned char *in, size_t inl) - { + const unsigned char *in, size_t inl) +{ size_t n; - unsigned char c[1],d[1]; + unsigned char c[1], d[1]; - for(n=0 ; n < inl ; ++n) - { - c[0]=(in[n/8]&(1 << (7-n%8))) ? 0x80 : 0; - DES_ede3_cfb_encrypt(c,d,1,1, - &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3, - (DES_cblock *)ctx->iv,ctx->encrypt); - out[n/8]=(out[n/8]&~(0x80 >> (n%8)))|((d[0]&0x80) >> (n%8)); - } + for (n = 0; n < inl; ++n) { + c[0] = (in[n / 8] & (1 << (7 - n % 8))) ? 0x80 : 0; + DES_ede3_cfb_encrypt(c, d, 1, 1, + &data(ctx)->ks1, &data(ctx)->ks2, + &data(ctx)->ks3, (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), + EVP_CIPHER_CTX_encrypting(ctx)); + out[n / 8] = (out[n / 8] & ~(0x80 >> (unsigned int)(n % 8))) + | ((d[0] & 0x80) >> (unsigned int)(n % 8)); + } return 1; - } +} static int des_ede3_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, - const unsigned char *in, size_t inl) - { - while (inl>=EVP_MAXCHUNK) - { - DES_ede3_cfb_encrypt(in,out,8,(long)EVP_MAXCHUNK, - &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3, - (DES_cblock *)ctx->iv,ctx->encrypt); - inl-=EVP_MAXCHUNK; - in +=EVP_MAXCHUNK; - out+=EVP_MAXCHUNK; - } + const unsigned char *in, size_t inl) +{ + while (inl >= EVP_MAXCHUNK) { + DES_ede3_cfb_encrypt(in, out, 8, (long)EVP_MAXCHUNK, + &data(ctx)->ks1, &data(ctx)->ks2, + &data(ctx)->ks3, (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), + EVP_CIPHER_CTX_encrypting(ctx)); + inl -= EVP_MAXCHUNK; + in += EVP_MAXCHUNK; + out += EVP_MAXCHUNK; + } if (inl) - DES_ede3_cfb_encrypt(in,out,8,(long)inl, - &data(ctx)->ks1,&data(ctx)->ks2,&data(ctx)->ks3, - (DES_cblock *)ctx->iv,ctx->encrypt); + DES_ede3_cfb_encrypt(in, out, 8, (long)inl, + &data(ctx)->ks1, &data(ctx)->ks2, + &data(ctx)->ks3, (DES_cblock *)EVP_CIPHER_CTX_iv_noconst(ctx), + EVP_CIPHER_CTX_encrypting(ctx)); return 1; - } +} BLOCK_CIPHER_defs(des_ede, DES_EDE_KEY, NID_des_ede, 8, 16, 8, 64, - EVP_CIPH_RAND_KEY, des_ede_init_key, NULL, - EVP_CIPHER_set_asn1_iv, - EVP_CIPHER_get_asn1_iv, - des3_ctrl) - -#define des_ede3_cfb64_cipher des_ede_cfb64_cipher -#define des_ede3_ofb_cipher des_ede_ofb_cipher -#define des_ede3_cbc_cipher des_ede_cbc_cipher -#define des_ede3_ecb_cipher des_ede_ecb_cipher - -BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64, - EVP_CIPH_RAND_KEY, des_ede3_init_key, NULL, - EVP_CIPHER_set_asn1_iv, - EVP_CIPHER_get_asn1_iv, - des3_ctrl) - -BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,1, - EVP_CIPH_RAND_KEY, des_ede3_init_key,NULL, - EVP_CIPHER_set_asn1_iv, - EVP_CIPHER_get_asn1_iv, - des3_ctrl) - -BLOCK_CIPHER_def_cfb(des_ede3,DES_EDE_KEY,NID_des_ede3,24,8,8, - EVP_CIPH_RAND_KEY, des_ede3_init_key,NULL, - EVP_CIPHER_set_asn1_iv, - EVP_CIPHER_get_asn1_iv, - des3_ctrl) + EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1, + des_ede_init_key, NULL, NULL, NULL, des3_ctrl) +# define des_ede3_cfb64_cipher des_ede_cfb64_cipher +# define des_ede3_ofb_cipher des_ede_ofb_cipher +# define des_ede3_cbc_cipher des_ede_cbc_cipher +# define des_ede3_ecb_cipher des_ede_ecb_cipher + BLOCK_CIPHER_defs(des_ede3, DES_EDE_KEY, NID_des_ede3, 8, 24, 8, 64, + EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1, + des_ede3_init_key, NULL, NULL, NULL, des3_ctrl) + + BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 1, + EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1, + des_ede3_init_key, NULL, NULL, NULL, des3_ctrl) + + BLOCK_CIPHER_def_cfb(des_ede3, DES_EDE_KEY, NID_des_ede3, 24, 8, 8, + EVP_CIPH_RAND_KEY | EVP_CIPH_FLAG_DEFAULT_ASN1, + des_ede3_init_key, NULL, NULL, NULL, des3_ctrl) static int des_ede_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, - const unsigned char *iv, int enc) - { - DES_cblock *deskey = (DES_cblock *)key; -#ifdef EVP_CHECK_DES_KEY - if (DES_set_key_checked(&deskey[0],&data(ctx)->ks1) - !! DES_set_key_checked(&deskey[1],&data(ctx)->ks2)) - return 0; -#else - DES_set_key_unchecked(&deskey[0],&data(ctx)->ks1); - DES_set_key_unchecked(&deskey[1],&data(ctx)->ks2); -#endif - memcpy(&data(ctx)->ks3,&data(ctx)->ks1, - sizeof(data(ctx)->ks1)); - return 1; - } + const unsigned char *iv, int enc) +{ + DES_cblock *deskey = (DES_cblock *)key; + DES_EDE_KEY *dat = data(ctx); + + dat->stream.cbc = NULL; +# if defined(SPARC_DES_CAPABLE) + if (SPARC_DES_CAPABLE) { + int mode = EVP_CIPHER_CTX_mode(ctx); + + if (mode == EVP_CIPH_CBC_MODE) { + des_t4_key_expand(&deskey[0], &dat->ks1); + des_t4_key_expand(&deskey[1], &dat->ks2); + memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1)); + dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt : + des_t4_ede3_cbc_decrypt; + return 1; + } + } +# endif + DES_set_key_unchecked(&deskey[0], &dat->ks1); + DES_set_key_unchecked(&deskey[1], &dat->ks2); + memcpy(&dat->ks3, &dat->ks1, sizeof(dat->ks1)); + return 1; +} static int des_ede3_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, - const unsigned char *iv, int enc) - { - DES_cblock *deskey = (DES_cblock *)key; -#ifdef KSSL_DEBUG - { - int i; - printf("des_ede3_init_key(ctx=%lx)\n", ctx); - printf("\tKEY= "); - for(i=0;i<24;i++) printf("%02X",key[i]); printf("\n"); - printf("\t IV= "); - for(i=0;i<8;i++) printf("%02X",iv[i]); printf("\n"); - } -#endif /* KSSL_DEBUG */ - -#ifdef EVP_CHECK_DES_KEY - if (DES_set_key_checked(&deskey[0],&data(ctx)->ks1) - || DES_set_key_checked(&deskey[1],&data(ctx)->ks2) - || DES_set_key_checked(&deskey[2],&data(ctx)->ks3)) - return 0; -#else - DES_set_key_unchecked(&deskey[0],&data(ctx)->ks1); - DES_set_key_unchecked(&deskey[1],&data(ctx)->ks2); - DES_set_key_unchecked(&deskey[2],&data(ctx)->ks3); -#endif - return 1; - } - -static int des3_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr) - { - - DES_cblock *deskey = ptr; - - switch(type) - { - case EVP_CTRL_RAND_KEY: - if (RAND_bytes(ptr, c->key_len) <= 0) - return 0; - DES_set_odd_parity(deskey); - if (c->key_len >= 16) - DES_set_odd_parity(deskey + 1); - if (c->key_len >= 24) - DES_set_odd_parity(deskey + 2); - return 1; - - default: - return -1; - } - } + const unsigned char *iv, int enc) +{ + DES_cblock *deskey = (DES_cblock *)key; + DES_EDE_KEY *dat = data(ctx); + + dat->stream.cbc = NULL; +# if defined(SPARC_DES_CAPABLE) + if (SPARC_DES_CAPABLE) { + int mode = EVP_CIPHER_CTX_mode(ctx); + + if (mode == EVP_CIPH_CBC_MODE) { + des_t4_key_expand(&deskey[0], &dat->ks1); + des_t4_key_expand(&deskey[1], &dat->ks2); + des_t4_key_expand(&deskey[2], &dat->ks3); + dat->stream.cbc = enc ? des_t4_ede3_cbc_encrypt : + des_t4_ede3_cbc_decrypt; + return 1; + } + } +# endif + DES_set_key_unchecked(&deskey[0], &dat->ks1); + DES_set_key_unchecked(&deskey[1], &dat->ks2); + DES_set_key_unchecked(&deskey[2], &dat->ks3); + return 1; +} + +static int des3_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, void *ptr) +{ + + DES_cblock *deskey = ptr; + + switch (type) { + case EVP_CTRL_RAND_KEY: + if (RAND_bytes(ptr, EVP_CIPHER_CTX_key_length(ctx)) <= 0) + return 0; + DES_set_odd_parity(deskey); + if (EVP_CIPHER_CTX_key_length(ctx) >= 16) + DES_set_odd_parity(deskey + 1); + if (EVP_CIPHER_CTX_key_length(ctx) >= 24) + DES_set_odd_parity(deskey + 2); + return 1; + + default: + return -1; + } +} const EVP_CIPHER *EVP_des_ede(void) { - return &des_ede_ecb; + return &des_ede_ecb; } const EVP_CIPHER *EVP_des_ede3(void) { - return &des_ede3_ecb; + return &des_ede3_ecb; +} + + +# include + +static const unsigned char wrap_iv[8] = + { 0x4a, 0xdd, 0xa2, 0x2c, 0x79, 0xe8, 0x21, 0x05 }; + +static int des_ede3_unwrap(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t inl) +{ + unsigned char icv[8], iv[8], sha1tmp[SHA_DIGEST_LENGTH]; + int rv = -1; + if (inl < 24) + return -1; + if (!out) + return inl - 16; + memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), wrap_iv, 8); + /* Decrypt first block which will end up as icv */ + des_ede_cbc_cipher(ctx, icv, in, 8); + /* Decrypt central blocks */ + /* + * If decrypting in place move whole output along a block so the next + * des_ede_cbc_cipher is in place. + */ + if (out == in) { + memmove(out, out + 8, inl - 8); + in -= 8; + } + des_ede_cbc_cipher(ctx, out, in + 8, inl - 16); + /* Decrypt final block which will be IV */ + des_ede_cbc_cipher(ctx, iv, in + inl - 8, 8); + /* Reverse order of everything */ + BUF_reverse(icv, NULL, 8); + BUF_reverse(out, NULL, inl - 16); + BUF_reverse(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 8); + /* Decrypt again using new IV */ + des_ede_cbc_cipher(ctx, out, out, inl - 16); + des_ede_cbc_cipher(ctx, icv, icv, 8); + /* Work out SHA1 hash of first portion */ + SHA1(out, inl - 16, sha1tmp); + + if (!CRYPTO_memcmp(sha1tmp, icv, 8)) + rv = inl - 16; + OPENSSL_cleanse(icv, 8); + OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH); + OPENSSL_cleanse(iv, 8); + OPENSSL_cleanse(EVP_CIPHER_CTX_iv_noconst(ctx), 8); + if (rv == -1) + OPENSSL_cleanse(out, inl - 16); + + return rv; } + +static int des_ede3_wrap(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t inl) +{ + unsigned char sha1tmp[SHA_DIGEST_LENGTH]; + if (!out) + return inl + 16; + /* Copy input to output buffer + 8 so we have space for IV */ + memmove(out + 8, in, inl); + /* Work out ICV */ + SHA1(in, inl, sha1tmp); + memcpy(out + inl + 8, sha1tmp, 8); + OPENSSL_cleanse(sha1tmp, SHA_DIGEST_LENGTH); + /* Generate random IV */ + if (RAND_bytes(EVP_CIPHER_CTX_iv_noconst(ctx), 8) <= 0) + return -1; + memcpy(out, EVP_CIPHER_CTX_iv_noconst(ctx), 8); + /* Encrypt everything after IV in place */ + des_ede_cbc_cipher(ctx, out + 8, out + 8, inl + 8); + BUF_reverse(out, NULL, inl + 16); + memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), wrap_iv, 8); + des_ede_cbc_cipher(ctx, out, out, inl + 16); + return inl + 16; +} + +static int des_ede3_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t inl) +{ + /* + * Sanity check input length: we typically only wrap keys so EVP_MAXCHUNK + * is more than will ever be needed. Also input length must be a multiple + * of 8 bits. + */ + if (inl >= EVP_MAXCHUNK || inl % 8) + return -1; + if (EVP_CIPHER_CTX_encrypting(ctx)) + return des_ede3_wrap(ctx, out, in, inl); + else + return des_ede3_unwrap(ctx, out, in, inl); +} + +static const EVP_CIPHER des3_wrap = { + NID_id_smime_alg_CMS3DESwrap, + 8, 24, 0, + EVP_CIPH_WRAP_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER + | EVP_CIPH_FLAG_DEFAULT_ASN1, + des_ede3_init_key, des_ede3_wrap_cipher, + NULL, + sizeof(DES_EDE_KEY), + NULL, NULL, NULL, NULL +}; + +const EVP_CIPHER *EVP_des_ede3_wrap(void) +{ + return &des3_wrap; +} + #endif