diff options
Diffstat (limited to 'crypto/openssl/crypto/asn1/x_pubkey.c')
-rw-r--r-- | crypto/openssl/crypto/asn1/x_pubkey.c | 335 |
1 files changed, 266 insertions, 69 deletions
diff --git a/crypto/openssl/crypto/asn1/x_pubkey.c b/crypto/openssl/crypto/asn1/x_pubkey.c index d9585401206d..91c275611611 100644 --- a/crypto/openssl/crypto/asn1/x_pubkey.c +++ b/crypto/openssl/crypto/asn1/x_pubkey.c @@ -60,16 +60,23 @@ #include "cryptlib.h" #include <openssl/asn1t.h> #include <openssl/x509.h> +#ifndef OPENSSL_NO_RSA +#include <openssl/rsa.h> +#endif +#ifndef OPENSSL_NO_DSA +#include <openssl/dsa.h> +#endif /* Minor tweak to operation: free up EVP_PKEY */ static int pubkey_cb(int operation, ASN1_VALUE **pval, const ASN1_ITEM *it) -{ - if(operation == ASN1_OP_FREE_POST) { + { + if (operation == ASN1_OP_FREE_POST) + { X509_PUBKEY *pubkey = (X509_PUBKEY *)*pval; EVP_PKEY_free(pubkey->pkey); - } + } return 1; -} + } ASN1_SEQUENCE_cb(X509_PUBKEY, pubkey_cb) = { ASN1_SIMPLE(X509_PUBKEY, algor, X509_ALGOR), @@ -80,8 +87,7 @@ IMPLEMENT_ASN1_FUNCTIONS(X509_PUBKEY) int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey) { - int ok=0; - X509_PUBKEY *pk; + X509_PUBKEY *pk=NULL; X509_ALGOR *a; ASN1_OBJECT *o; unsigned char *s,*p = NULL; @@ -104,32 +110,111 @@ int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey) (a->parameter->type != V_ASN1_NULL)) { ASN1_TYPE_free(a->parameter); - a->parameter=ASN1_TYPE_new(); + if (!(a->parameter=ASN1_TYPE_new())) + { + X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE); + goto err; + } a->parameter->type=V_ASN1_NULL; } } - else #ifndef OPENSSL_NO_DSA - if (pkey->type == EVP_PKEY_DSA) + else if (pkey->type == EVP_PKEY_DSA) { unsigned char *pp; DSA *dsa; - + dsa=pkey->pkey.dsa; dsa->write_params=0; ASN1_TYPE_free(a->parameter); - i=i2d_DSAparams(dsa,NULL); - if ((p=(unsigned char *)OPENSSL_malloc(i)) == NULL) goto err; + if ((i=i2d_DSAparams(dsa,NULL)) <= 0) + goto err; + if (!(p=(unsigned char *)OPENSSL_malloc(i))) + { + X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE); + goto err; + } pp=p; i2d_DSAparams(dsa,&pp); - a->parameter=ASN1_TYPE_new(); + if (!(a->parameter=ASN1_TYPE_new())) + { + OPENSSL_free(p); + X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE); + goto err; + } a->parameter->type=V_ASN1_SEQUENCE; - a->parameter->value.sequence=ASN1_STRING_new(); - ASN1_STRING_set(a->parameter->value.sequence,p,i); + if (!(a->parameter->value.sequence=ASN1_STRING_new())) + { + OPENSSL_free(p); + X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE); + goto err; + } + if (!ASN1_STRING_set(a->parameter->value.sequence,p,i)) + { + OPENSSL_free(p); + X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE); + goto err; + } OPENSSL_free(p); } - else #endif +#ifndef OPENSSL_NO_EC + else if (pkey->type == EVP_PKEY_EC) + { + int nid=0; + unsigned char *pp; + EC_KEY *ec_key; + const EC_GROUP *group; + + ec_key = pkey->pkey.ec; + ASN1_TYPE_free(a->parameter); + + if ((a->parameter = ASN1_TYPE_new()) == NULL) + { + X509err(X509_F_X509_PUBKEY_SET, ERR_R_ASN1_LIB); + goto err; + } + + group = EC_KEY_get0_group(ec_key); + if (EC_GROUP_get_asn1_flag(group) + && (nid = EC_GROUP_get_curve_name(group))) + { + /* just set the OID */ + a->parameter->type = V_ASN1_OBJECT; + a->parameter->value.object = OBJ_nid2obj(nid); + } + else /* explicit parameters */ + { + if ((i = i2d_ECParameters(ec_key, NULL)) == 0) + { + X509err(X509_F_X509_PUBKEY_SET, ERR_R_EC_LIB); + goto err; + } + if ((p = (unsigned char *) OPENSSL_malloc(i)) == NULL) + { + X509err(X509_F_X509_PUBKEY_SET, ERR_R_MALLOC_FAILURE); + goto err; + } + pp = p; + if (!i2d_ECParameters(ec_key, &pp)) + { + X509err(X509_F_X509_PUBKEY_SET, ERR_R_EC_LIB); + OPENSSL_free(p); + goto err; + } + a->parameter->type = V_ASN1_SEQUENCE; + if ((a->parameter->value.sequence = ASN1_STRING_new()) == NULL) + { + X509err(X509_F_X509_PUBKEY_SET, ERR_R_ASN1_LIB); + OPENSSL_free(p); + goto err; + } + ASN1_STRING_set(a->parameter->value.sequence, p, i); + OPENSSL_free(p); + } + } +#endif + else if (1) { X509err(X509_F_X509_PUBKEY_SET,X509_R_UNSUPPORTED_ALGORITHM); goto err; @@ -143,8 +228,12 @@ int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey) } p=s; i2d_PublicKey(pkey,&p); - if (!M_ASN1_BIT_STRING_set(pk->public_key,s,i)) goto err; - /* Set number of unused bits to zero */ + if (!M_ASN1_BIT_STRING_set(pk->public_key,s,i)) + { + X509err(X509_F_X509_PUBKEY_SET,ERR_R_MALLOC_FAILURE); + goto err; + } + /* Set number of unused bits to zero */ pk->public_key->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07); pk->public_key->flags|=ASN1_STRING_FLAG_BITS_LEFT; @@ -159,12 +248,11 @@ int X509_PUBKEY_set(X509_PUBKEY **x, EVP_PKEY *pkey) X509_PUBKEY_free(*x); *x=pk; - pk=NULL; - ok=1; + return 1; err: if (pk != NULL) X509_PUBKEY_free(pk); - return(ok); + return 0; } EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key) @@ -172,8 +260,8 @@ EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key) EVP_PKEY *ret=NULL; long j; int type; - unsigned char *p; -#ifndef OPENSSL_NO_DSA + const unsigned char *p; +#if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA) const unsigned char *cp; X509_ALGOR *a; #endif @@ -181,40 +269,106 @@ EVP_PKEY *X509_PUBKEY_get(X509_PUBKEY *key) if (key == NULL) goto err; if (key->pkey != NULL) - { - CRYPTO_add(&key->pkey->references,1,CRYPTO_LOCK_EVP_PKEY); - return(key->pkey); - } + { + CRYPTO_add(&key->pkey->references, 1, CRYPTO_LOCK_EVP_PKEY); + return(key->pkey); + } if (key->public_key == NULL) goto err; type=OBJ_obj2nid(key->algor->algorithm); - p=key->public_key->data; - j=key->public_key->length; - if ((ret=d2i_PublicKey(type,NULL,&p,(long)j)) == NULL) + if ((ret = EVP_PKEY_new()) == NULL) { - X509err(X509_F_X509_PUBKEY_GET,X509_R_ERR_ASN1_LIB); + X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE); goto err; } - ret->save_parameters=0; + ret->type = EVP_PKEY_type(type); -#ifndef OPENSSL_NO_DSA + /* the parameters must be extracted before the public key (ECDSA!) */ + +#if !defined(OPENSSL_NO_DSA) || !defined(OPENSSL_NO_ECDSA) a=key->algor; - if (ret->type == EVP_PKEY_DSA) +#endif + + if (0) + ; +#ifndef OPENSSL_NO_DSA + else if (ret->type == EVP_PKEY_DSA) { if (a->parameter && (a->parameter->type == V_ASN1_SEQUENCE)) { + if ((ret->pkey.dsa = DSA_new()) == NULL) + { + X509err(X509_F_X509_PUBKEY_GET, ERR_R_MALLOC_FAILURE); + goto err; + } ret->pkey.dsa->write_params=0; cp=p=a->parameter->value.sequence->data; j=a->parameter->value.sequence->length; - if (!d2i_DSAparams(&ret->pkey.dsa,&cp,(long)j)) + if (!d2i_DSAparams(&ret->pkey.dsa, &cp, (long)j)) goto err; } ret->save_parameters=1; } #endif - key->pkey=ret; - CRYPTO_add(&ret->references,1,CRYPTO_LOCK_EVP_PKEY); +#ifndef OPENSSL_NO_EC + else if (ret->type == EVP_PKEY_EC) + { + if (a->parameter && (a->parameter->type == V_ASN1_SEQUENCE)) + { + /* type == V_ASN1_SEQUENCE => we have explicit parameters + * (e.g. parameters in the X9_62_EC_PARAMETERS-structure ) + */ + if ((ret->pkey.ec= EC_KEY_new()) == NULL) + { + X509err(X509_F_X509_PUBKEY_GET, + ERR_R_MALLOC_FAILURE); + goto err; + } + cp = p = a->parameter->value.sequence->data; + j = a->parameter->value.sequence->length; + if (!d2i_ECParameters(&ret->pkey.ec, &cp, (long)j)) + { + X509err(X509_F_X509_PUBKEY_GET, ERR_R_EC_LIB); + goto err; + } + } + else if (a->parameter && (a->parameter->type == V_ASN1_OBJECT)) + { + /* type == V_ASN1_OBJECT => the parameters are given + * by an asn1 OID + */ + EC_KEY *ec_key; + EC_GROUP *group; + + if (ret->pkey.ec == NULL) + ret->pkey.ec = EC_KEY_new(); + ec_key = ret->pkey.ec; + if (ec_key == NULL) + goto err; + group = EC_GROUP_new_by_curve_name(OBJ_obj2nid(a->parameter->value.object)); + if (group == NULL) + goto err; + EC_GROUP_set_asn1_flag(group, OPENSSL_EC_NAMED_CURVE); + if (EC_KEY_set_group(ec_key, group) == 0) + goto err; + EC_GROUP_free(group); + } + /* the case implicitlyCA is currently not implemented */ + ret->save_parameters = 1; + } +#endif + + p=key->public_key->data; + j=key->public_key->length; + if (!d2i_PublicKey(type, &ret, &p, (long)j)) + { + X509err(X509_F_X509_PUBKEY_GET, X509_R_ERR_ASN1_LIB); + goto err; + } + + key->pkey = ret; + CRYPTO_add(&ret->references, 1, CRYPTO_LOCK_EVP_PKEY); return(ret); err: if (ret != NULL) @@ -226,9 +380,9 @@ err: * and encode or decode as X509_PUBKEY */ -EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, unsigned char **pp, +EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, const unsigned char **pp, long length) -{ + { X509_PUBKEY *xpk; EVP_PKEY *pktmp; xpk = d2i_X509_PUBKEY(NULL, pp, length); @@ -236,15 +390,16 @@ EVP_PKEY *d2i_PUBKEY(EVP_PKEY **a, unsigned char **pp, pktmp = X509_PUBKEY_get(xpk); X509_PUBKEY_free(xpk); if(!pktmp) return NULL; - if(a) { + if(a) + { EVP_PKEY_free(*a); *a = pktmp; - } + } return pktmp; -} + } int i2d_PUBKEY(EVP_PKEY *a, unsigned char **pp) -{ + { X509_PUBKEY *xpk=NULL; int ret; if(!a) return 0; @@ -252,83 +407,125 @@ int i2d_PUBKEY(EVP_PKEY *a, unsigned char **pp) ret = i2d_X509_PUBKEY(xpk, pp); X509_PUBKEY_free(xpk); return ret; -} + } /* The following are equivalents but which return RSA and DSA * keys */ #ifndef OPENSSL_NO_RSA -RSA *d2i_RSA_PUBKEY(RSA **a, unsigned char **pp, +RSA *d2i_RSA_PUBKEY(RSA **a, const unsigned char **pp, long length) -{ + { EVP_PKEY *pkey; RSA *key; - unsigned char *q; + const unsigned char *q; q = *pp; pkey = d2i_PUBKEY(NULL, &q, length); - if(!pkey) return NULL; + if (!pkey) return NULL; key = EVP_PKEY_get1_RSA(pkey); EVP_PKEY_free(pkey); - if(!key) return NULL; + if (!key) return NULL; *pp = q; - if(a) { + if (a) + { RSA_free(*a); *a = key; - } + } return key; -} + } int i2d_RSA_PUBKEY(RSA *a, unsigned char **pp) -{ + { EVP_PKEY *pktmp; int ret; - if(!a) return 0; + if (!a) return 0; pktmp = EVP_PKEY_new(); - if(!pktmp) { + if (!pktmp) + { ASN1err(ASN1_F_I2D_RSA_PUBKEY, ERR_R_MALLOC_FAILURE); return 0; - } + } EVP_PKEY_set1_RSA(pktmp, a); ret = i2d_PUBKEY(pktmp, pp); EVP_PKEY_free(pktmp); return ret; -} + } #endif #ifndef OPENSSL_NO_DSA -DSA *d2i_DSA_PUBKEY(DSA **a, unsigned char **pp, +DSA *d2i_DSA_PUBKEY(DSA **a, const unsigned char **pp, long length) -{ + { EVP_PKEY *pkey; DSA *key; - unsigned char *q; + const unsigned char *q; q = *pp; pkey = d2i_PUBKEY(NULL, &q, length); - if(!pkey) return NULL; + if (!pkey) return NULL; key = EVP_PKEY_get1_DSA(pkey); EVP_PKEY_free(pkey); - if(!key) return NULL; + if (!key) return NULL; *pp = q; - if(a) { + if (a) + { DSA_free(*a); *a = key; - } + } return key; -} + } int i2d_DSA_PUBKEY(DSA *a, unsigned char **pp) -{ + { EVP_PKEY *pktmp; int ret; if(!a) return 0; pktmp = EVP_PKEY_new(); - if(!pktmp) { + if(!pktmp) + { ASN1err(ASN1_F_I2D_DSA_PUBKEY, ERR_R_MALLOC_FAILURE); return 0; - } + } EVP_PKEY_set1_DSA(pktmp, a); ret = i2d_PUBKEY(pktmp, pp); EVP_PKEY_free(pktmp); return ret; -} + } +#endif + +#ifndef OPENSSL_NO_EC +EC_KEY *d2i_EC_PUBKEY(EC_KEY **a, const unsigned char **pp, long length) + { + EVP_PKEY *pkey; + EC_KEY *key; + const unsigned char *q; + q = *pp; + pkey = d2i_PUBKEY(NULL, &q, length); + if (!pkey) return(NULL); + key = EVP_PKEY_get1_EC_KEY(pkey); + EVP_PKEY_free(pkey); + if (!key) return(NULL); + *pp = q; + if (a) + { + EC_KEY_free(*a); + *a = key; + } + return(key); + } + +int i2d_EC_PUBKEY(EC_KEY *a, unsigned char **pp) + { + EVP_PKEY *pktmp; + int ret; + if (!a) return(0); + if ((pktmp = EVP_PKEY_new()) == NULL) + { + ASN1err(ASN1_F_I2D_EC_PUBKEY, ERR_R_MALLOC_FAILURE); + return(0); + } + EVP_PKEY_set1_EC_KEY(pktmp, a); + ret = i2d_PUBKEY(pktmp, pp); + EVP_PKEY_free(pktmp); + return(ret); + } #endif |