diff options
Diffstat (limited to 'openssl/crypto/x509/x509_cmp.c')
| -rw-r--r-- | openssl/crypto/x509/x509_cmp.c | 589 |
1 files changed, 372 insertions, 217 deletions
diff --git a/openssl/crypto/x509/x509_cmp.c b/openssl/crypto/x509/x509_cmp.c index 352aa3743..49c71b912 100644 --- a/openssl/crypto/x509/x509_cmp.c +++ b/openssl/crypto/x509/x509_cmp.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 @@ -65,279 +65,434 @@ #include <openssl/x509v3.h> int X509_issuer_and_serial_cmp(const X509 *a, const X509 *b) - { - int i; - X509_CINF *ai,*bi; - - ai=a->cert_info; - bi=b->cert_info; - i=M_ASN1_INTEGER_cmp(ai->serialNumber,bi->serialNumber); - if (i) return(i); - return(X509_NAME_cmp(ai->issuer,bi->issuer)); - } +{ + int i; + X509_CINF *ai, *bi; + + ai = a->cert_info; + bi = b->cert_info; + i = M_ASN1_INTEGER_cmp(ai->serialNumber, bi->serialNumber); + if (i) + return (i); + return (X509_NAME_cmp(ai->issuer, bi->issuer)); +} #ifndef OPENSSL_NO_MD5 unsigned long X509_issuer_and_serial_hash(X509 *a) - { - unsigned long ret=0; - EVP_MD_CTX ctx; - unsigned char md[16]; - char *f; - - EVP_MD_CTX_init(&ctx); - f=X509_NAME_oneline(a->cert_info->issuer,NULL,0); - if (!EVP_DigestInit_ex(&ctx, EVP_md5(), NULL)) - goto err; - if (!EVP_DigestUpdate(&ctx,(unsigned char *)f,strlen(f))) - goto err; - OPENSSL_free(f); - if(!EVP_DigestUpdate(&ctx,(unsigned char *)a->cert_info->serialNumber->data, - (unsigned long)a->cert_info->serialNumber->length)) - goto err; - if (!EVP_DigestFinal_ex(&ctx,&(md[0]),NULL)) - goto err; - ret=( ((unsigned long)md[0] )|((unsigned long)md[1]<<8L)| - ((unsigned long)md[2]<<16L)|((unsigned long)md[3]<<24L) - )&0xffffffffL; - err: - EVP_MD_CTX_cleanup(&ctx); - return(ret); - } +{ + unsigned long ret = 0; + EVP_MD_CTX ctx; + unsigned char md[16]; + char *f; + + EVP_MD_CTX_init(&ctx); + f = X509_NAME_oneline(a->cert_info->issuer, NULL, 0); + if (!EVP_DigestInit_ex(&ctx, EVP_md5(), NULL)) + goto err; + if (!EVP_DigestUpdate(&ctx, (unsigned char *)f, strlen(f))) + goto err; + OPENSSL_free(f); + if (!EVP_DigestUpdate + (&ctx, (unsigned char *)a->cert_info->serialNumber->data, + (unsigned long)a->cert_info->serialNumber->length)) + goto err; + if (!EVP_DigestFinal_ex(&ctx, &(md[0]), NULL)) + goto err; + ret = (((unsigned long)md[0]) | ((unsigned long)md[1] << 8L) | + ((unsigned long)md[2] << 16L) | ((unsigned long)md[3] << 24L) + ) & 0xffffffffL; + err: + EVP_MD_CTX_cleanup(&ctx); + return (ret); +} #endif - + int X509_issuer_name_cmp(const X509 *a, const X509 *b) - { - return(X509_NAME_cmp(a->cert_info->issuer,b->cert_info->issuer)); - } +{ + return (X509_NAME_cmp(a->cert_info->issuer, b->cert_info->issuer)); +} int X509_subject_name_cmp(const X509 *a, const X509 *b) - { - return(X509_NAME_cmp(a->cert_info->subject,b->cert_info->subject)); - } +{ + return (X509_NAME_cmp(a->cert_info->subject, b->cert_info->subject)); +} int X509_CRL_cmp(const X509_CRL *a, const X509_CRL *b) - { - return(X509_NAME_cmp(a->crl->issuer,b->crl->issuer)); - } +{ + return (X509_NAME_cmp(a->crl->issuer, b->crl->issuer)); +} #ifndef OPENSSL_NO_SHA int X509_CRL_match(const X509_CRL *a, const X509_CRL *b) - { - return memcmp(a->sha1_hash, b->sha1_hash, 20); - } +{ + return memcmp(a->sha1_hash, b->sha1_hash, 20); +} #endif X509_NAME *X509_get_issuer_name(X509 *a) - { - return(a->cert_info->issuer); - } +{ + return (a->cert_info->issuer); +} unsigned long X509_issuer_name_hash(X509 *x) - { - return(X509_NAME_hash(x->cert_info->issuer)); - } +{ + return (X509_NAME_hash(x->cert_info->issuer)); +} #ifndef OPENSSL_NO_MD5 unsigned long X509_issuer_name_hash_old(X509 *x) - { - return(X509_NAME_hash_old(x->cert_info->issuer)); - } +{ + return (X509_NAME_hash_old(x->cert_info->issuer)); +} #endif X509_NAME *X509_get_subject_name(X509 *a) - { - return(a->cert_info->subject); - } +{ + return (a->cert_info->subject); +} ASN1_INTEGER *X509_get_serialNumber(X509 *a) - { - return(a->cert_info->serialNumber); - } +{ + return (a->cert_info->serialNumber); +} unsigned long X509_subject_name_hash(X509 *x) - { - return(X509_NAME_hash(x->cert_info->subject)); - } +{ + return (X509_NAME_hash(x->cert_info->subject)); +} #ifndef OPENSSL_NO_MD5 unsigned long X509_subject_name_hash_old(X509 *x) - { - return(X509_NAME_hash_old(x->cert_info->subject)); - } +{ + return (X509_NAME_hash_old(x->cert_info->subject)); +} #endif #ifndef OPENSSL_NO_SHA -/* Compare two certificates: they must be identical for - * this to work. NB: Although "cmp" operations are generally - * prototyped to take "const" arguments (eg. for use in - * STACKs), the way X509 handling is - these operations may - * involve ensuring the hashes are up-to-date and ensuring - * certain cert information is cached. So this is the point - * where the "depth-first" constification tree has to halt - * with an evil cast. +/* + * Compare two certificates: they must be identical for this to work. NB: + * Although "cmp" operations are generally prototyped to take "const" + * arguments (eg. for use in STACKs), the way X509 handling is - these + * operations may involve ensuring the hashes are up-to-date and ensuring + * certain cert information is cached. So this is the point where the + * "depth-first" constification tree has to halt with an evil cast. */ int X509_cmp(const X509 *a, const X509 *b) { - /* ensure hash is valid */ - X509_check_purpose((X509 *)a, -1, 0); - X509_check_purpose((X509 *)b, -1, 0); - - return memcmp(a->sha1_hash, b->sha1_hash, SHA_DIGEST_LENGTH); + int rv; + /* ensure hash is valid */ + X509_check_purpose((X509 *)a, -1, 0); + X509_check_purpose((X509 *)b, -1, 0); + + rv = memcmp(a->sha1_hash, b->sha1_hash, SHA_DIGEST_LENGTH); + if (rv) + return rv; + /* Check for match against stored encoding too */ + if (!a->cert_info->enc.modified && !b->cert_info->enc.modified) { + rv = (int)(a->cert_info->enc.len - b->cert_info->enc.len); + if (rv) + return rv; + return memcmp(a->cert_info->enc.enc, b->cert_info->enc.enc, + a->cert_info->enc.len); + } + return rv; } #endif - int X509_NAME_cmp(const X509_NAME *a, const X509_NAME *b) - { - int ret; +{ + int ret; - /* Ensure canonical encoding is present and up to date */ + /* Ensure canonical encoding is present and up to date */ - if (!a->canon_enc || a->modified) - { - ret = i2d_X509_NAME((X509_NAME *)a, NULL); - if (ret < 0) - return -2; - } + if (!a->canon_enc || a->modified) { + ret = i2d_X509_NAME((X509_NAME *)a, NULL); + if (ret < 0) + return -2; + } - if (!b->canon_enc || b->modified) - { - ret = i2d_X509_NAME((X509_NAME *)b, NULL); - if (ret < 0) - return -2; - } + if (!b->canon_enc || b->modified) { + ret = i2d_X509_NAME((X509_NAME *)b, NULL); + if (ret < 0) + return -2; + } - ret = a->canon_enclen - b->canon_enclen; + ret = a->canon_enclen - b->canon_enclen; - if (ret) - return ret; + if (ret) + return ret; - return memcmp(a->canon_enc, b->canon_enc, a->canon_enclen); + return memcmp(a->canon_enc, b->canon_enc, a->canon_enclen); - } +} unsigned long X509_NAME_hash(X509_NAME *x) - { - unsigned long ret=0; - unsigned char md[SHA_DIGEST_LENGTH]; - - /* Make sure X509_NAME structure contains valid cached encoding */ - i2d_X509_NAME(x,NULL); - if (!EVP_Digest(x->canon_enc, x->canon_enclen, md, NULL, EVP_sha1(), - NULL)) - return 0; - - ret=( ((unsigned long)md[0] )|((unsigned long)md[1]<<8L)| - ((unsigned long)md[2]<<16L)|((unsigned long)md[3]<<24L) - )&0xffffffffL; - return(ret); - } - +{ + unsigned long ret = 0; + unsigned char md[SHA_DIGEST_LENGTH]; + + /* Make sure X509_NAME structure contains valid cached encoding */ + i2d_X509_NAME(x, NULL); + if (!EVP_Digest(x->canon_enc, x->canon_enclen, md, NULL, EVP_sha1(), + NULL)) + return 0; + + ret = (((unsigned long)md[0]) | ((unsigned long)md[1] << 8L) | + ((unsigned long)md[2] << 16L) | ((unsigned long)md[3] << 24L) + ) & 0xffffffffL; + return (ret); +} #ifndef OPENSSL_NO_MD5 -/* I now DER encode the name and hash it. Since I cache the DER encoding, - * this is reasonably efficient. */ +/* + * I now DER encode the name and hash it. Since I cache the DER encoding, + * this is reasonably efficient. + */ unsigned long X509_NAME_hash_old(X509_NAME *x) - { - EVP_MD_CTX md_ctx; - unsigned long ret=0; - unsigned char md[16]; - - /* Make sure X509_NAME structure contains valid cached encoding */ - i2d_X509_NAME(x,NULL); - EVP_MD_CTX_init(&md_ctx); - EVP_MD_CTX_set_flags(&md_ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); - if (EVP_DigestInit_ex(&md_ctx, EVP_md5(), NULL) - && EVP_DigestUpdate(&md_ctx, x->bytes->data, x->bytes->length) - && EVP_DigestFinal_ex(&md_ctx,md,NULL)) - ret=(((unsigned long)md[0] )|((unsigned long)md[1]<<8L)| - ((unsigned long)md[2]<<16L)|((unsigned long)md[3]<<24L) - )&0xffffffffL; - EVP_MD_CTX_cleanup(&md_ctx); - - return(ret); - } +{ + EVP_MD_CTX md_ctx; + unsigned long ret = 0; + unsigned char md[16]; + + /* Make sure X509_NAME structure contains valid cached encoding */ + i2d_X509_NAME(x, NULL); + EVP_MD_CTX_init(&md_ctx); + EVP_MD_CTX_set_flags(&md_ctx, EVP_MD_CTX_FLAG_NON_FIPS_ALLOW); + if (EVP_DigestInit_ex(&md_ctx, EVP_md5(), NULL) + && EVP_DigestUpdate(&md_ctx, x->bytes->data, x->bytes->length) + && EVP_DigestFinal_ex(&md_ctx, md, NULL)) + ret = (((unsigned long)md[0]) | ((unsigned long)md[1] << 8L) | + ((unsigned long)md[2] << 16L) | ((unsigned long)md[3] << 24L) + ) & 0xffffffffL; + EVP_MD_CTX_cleanup(&md_ctx); + + return (ret); +} #endif /* Search a stack of X509 for a match */ X509 *X509_find_by_issuer_and_serial(STACK_OF(X509) *sk, X509_NAME *name, - ASN1_INTEGER *serial) - { - int i; - X509_CINF cinf; - X509 x,*x509=NULL; - - if(!sk) return NULL; - - x.cert_info= &cinf; - cinf.serialNumber=serial; - cinf.issuer=name; - - for (i=0; i<sk_X509_num(sk); i++) - { - x509=sk_X509_value(sk,i); - if (X509_issuer_and_serial_cmp(x509,&x) == 0) - return(x509); - } - return(NULL); - } + ASN1_INTEGER *serial) +{ + int i; + X509_CINF cinf; + X509 x, *x509 = NULL; + + if (!sk) + return NULL; + + x.cert_info = &cinf; + cinf.serialNumber = serial; + cinf.issuer = name; + + for (i = 0; i < sk_X509_num(sk); i++) { + x509 = sk_X509_value(sk, i); + if (X509_issuer_and_serial_cmp(x509, &x) == 0) + return (x509); + } + return (NULL); +} X509 *X509_find_by_subject(STACK_OF(X509) *sk, X509_NAME *name) - { - X509 *x509; - int i; - - for (i=0; i<sk_X509_num(sk); i++) - { - x509=sk_X509_value(sk,i); - if (X509_NAME_cmp(X509_get_subject_name(x509),name) == 0) - return(x509); - } - return(NULL); - } +{ + X509 *x509; + int i; + + for (i = 0; i < sk_X509_num(sk); i++) { + x509 = sk_X509_value(sk, i); + if (X509_NAME_cmp(X509_get_subject_name(x509), name) == 0) + return (x509); + } + return (NULL); +} EVP_PKEY *X509_get_pubkey(X509 *x) - { - if ((x == NULL) || (x->cert_info == NULL)) - return(NULL); - return(X509_PUBKEY_get(x->cert_info->key)); - } +{ + if ((x == NULL) || (x->cert_info == NULL)) + return (NULL); + return (X509_PUBKEY_get(x->cert_info->key)); +} ASN1_BIT_STRING *X509_get0_pubkey_bitstr(const X509 *x) - { - if(!x) return NULL; - return x->cert_info->key->public_key; - } +{ + if (!x) + return NULL; + return x->cert_info->key->public_key; +} int X509_check_private_key(X509 *x, EVP_PKEY *k) - { - EVP_PKEY *xk; - int ret; - - xk=X509_get_pubkey(x); - - if (xk) - ret = EVP_PKEY_cmp(xk, k); - else - ret = -2; - - switch (ret) - { - case 1: - break; - case 0: - X509err(X509_F_X509_CHECK_PRIVATE_KEY,X509_R_KEY_VALUES_MISMATCH); - break; - case -1: - X509err(X509_F_X509_CHECK_PRIVATE_KEY,X509_R_KEY_TYPE_MISMATCH); - break; - case -2: - X509err(X509_F_X509_CHECK_PRIVATE_KEY,X509_R_UNKNOWN_KEY_TYPE); - } - if (xk) - EVP_PKEY_free(xk); - if (ret > 0) - return 1; - return 0; - } +{ + EVP_PKEY *xk; + int ret; + + xk = X509_get_pubkey(x); + + if (xk) + ret = EVP_PKEY_cmp(xk, k); + else + ret = -2; + + switch (ret) { + case 1: + break; + case 0: + X509err(X509_F_X509_CHECK_PRIVATE_KEY, X509_R_KEY_VALUES_MISMATCH); + break; + case -1: + X509err(X509_F_X509_CHECK_PRIVATE_KEY, X509_R_KEY_TYPE_MISMATCH); + break; + case -2: + X509err(X509_F_X509_CHECK_PRIVATE_KEY, X509_R_UNKNOWN_KEY_TYPE); + } + if (xk) + EVP_PKEY_free(xk); + if (ret > 0) + return 1; + return 0; +} + +/* + * Check a suite B algorithm is permitted: pass in a public key and the NID + * of its signature (or 0 if no signature). The pflags is a pointer to a + * flags field which must contain the suite B verification flags. + */ + +#ifndef OPENSSL_NO_EC + +static int check_suite_b(EVP_PKEY *pkey, int sign_nid, unsigned long *pflags) +{ + const EC_GROUP *grp = NULL; + int curve_nid; + if (pkey && pkey->type == EVP_PKEY_EC) + grp = EC_KEY_get0_group(pkey->pkey.ec); + if (!grp) + return X509_V_ERR_SUITE_B_INVALID_ALGORITHM; + curve_nid = EC_GROUP_get_curve_name(grp); + /* Check curve is consistent with LOS */ + if (curve_nid == NID_secp384r1) { /* P-384 */ + /* + * Check signature algorithm is consistent with curve. + */ + if (sign_nid != -1 && sign_nid != NID_ecdsa_with_SHA384) + return X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM; + if (!(*pflags & X509_V_FLAG_SUITEB_192_LOS)) + return X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED; + /* If we encounter P-384 we cannot use P-256 later */ + *pflags &= ~X509_V_FLAG_SUITEB_128_LOS_ONLY; + } else if (curve_nid == NID_X9_62_prime256v1) { /* P-256 */ + if (sign_nid != -1 && sign_nid != NID_ecdsa_with_SHA256) + return X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM; + if (!(*pflags & X509_V_FLAG_SUITEB_128_LOS_ONLY)) + return X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED; + } else + return X509_V_ERR_SUITE_B_INVALID_CURVE; + + return X509_V_OK; +} + +int X509_chain_check_suiteb(int *perror_depth, X509 *x, STACK_OF(X509) *chain, + unsigned long flags) +{ + int rv, i, sign_nid; + EVP_PKEY *pk = NULL; + unsigned long tflags; + if (!(flags & X509_V_FLAG_SUITEB_128_LOS)) + return X509_V_OK; + tflags = flags; + /* If no EE certificate passed in must be first in chain */ + if (x == NULL) { + x = sk_X509_value(chain, 0); + i = 1; + } else + i = 0; + + if (X509_get_version(x) != 2) { + rv = X509_V_ERR_SUITE_B_INVALID_VERSION; + /* Correct error depth */ + i = 0; + goto end; + } + + pk = X509_get_pubkey(x); + /* Check EE key only */ + rv = check_suite_b(pk, -1, &tflags); + if (rv != X509_V_OK) { + /* Correct error depth */ + i = 0; + goto end; + } + for (; i < sk_X509_num(chain); i++) { + sign_nid = X509_get_signature_nid(x); + x = sk_X509_value(chain, i); + if (X509_get_version(x) != 2) { + rv = X509_V_ERR_SUITE_B_INVALID_VERSION; + goto end; + } + EVP_PKEY_free(pk); + pk = X509_get_pubkey(x); + rv = check_suite_b(pk, sign_nid, &tflags); + if (rv != X509_V_OK) + goto end; + } + + /* Final check: root CA signature */ + rv = check_suite_b(pk, X509_get_signature_nid(x), &tflags); + end: + if (pk) + EVP_PKEY_free(pk); + if (rv != X509_V_OK) { + /* Invalid signature or LOS errors are for previous cert */ + if ((rv == X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM + || rv == X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED) && i) + i--; + /* + * If we have LOS error and flags changed then we are signing P-384 + * with P-256. Use more meaninggul error. + */ + if (rv == X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED && flags != tflags) + rv = X509_V_ERR_SUITE_B_CANNOT_SIGN_P_384_WITH_P_256; + if (perror_depth) + *perror_depth = i; + } + return rv; +} + +int X509_CRL_check_suiteb(X509_CRL *crl, EVP_PKEY *pk, unsigned long flags) +{ + int sign_nid; + if (!(flags & X509_V_FLAG_SUITEB_128_LOS)) + return X509_V_OK; + sign_nid = OBJ_obj2nid(crl->crl->sig_alg->algorithm); + return check_suite_b(pk, sign_nid, &flags); +} + +#else +int X509_chain_check_suiteb(int *perror_depth, X509 *x, STACK_OF(X509) *chain, + unsigned long flags) +{ + return 0; +} + +int X509_CRL_check_suiteb(X509_CRL *crl, EVP_PKEY *pk, unsigned long flags) +{ + return 0; +} + +#endif +/* + * Not strictly speaking an "up_ref" as a STACK doesn't have a reference + * count but it has the same effect by duping the STACK and upping the ref of + * each X509 structure. + */ +STACK_OF(X509) *X509_chain_up_ref(STACK_OF(X509) *chain) +{ + STACK_OF(X509) *ret; + int i; + ret = sk_X509_dup(chain); + for (i = 0; i < sk_X509_num(ret); i++) { + X509 *x = sk_X509_value(ret, i); + CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509); + } + return ret; +} |