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oid_get_oid_by_*() now give back oid length as well

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This commit is contained in:
Paul Bakker 2013-09-10 11:43:44 +02:00
parent b2d7f23592
commit 1c3853b953
4 changed files with 25 additions and 14 deletions
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6
include/polarssl/oid.h
View File

@ -409,11 +409,12 @@ int oid_get_sig_alg_desc( const asn1_buf *oid, const char **desc );
* \param md_alg message digest algorithm * \param md_alg message digest algorithm
* \param pk_alg public key algorithm * \param pk_alg public key algorithm
* \param oid place to store ASN.1 OID string pointer * \param oid place to store ASN.1 OID string pointer
* \param olen length of the OID
* *
* \return 0 if successful, or POLARSSL_ERR_OID_NOT_FOUND * \return 0 if successful, or POLARSSL_ERR_OID_NOT_FOUND
*/ */
int oid_get_oid_by_sig_alg( pk_type_t pk_alg, md_type_t md_alg, int oid_get_oid_by_sig_alg( pk_type_t pk_alg, md_type_t md_alg,
const char **oid_str ); const char **oid, size_t *olen );
/** /**
* \brief Translate hash algorithm OID into md_type * \brief Translate hash algorithm OID into md_type
@ -441,10 +442,11 @@ int oid_get_extended_key_usage( const asn1_buf *oid, const char **desc );
* *
* \param md_alg message digest algorithm * \param md_alg message digest algorithm
* \param oid place to store ASN.1 OID string pointer * \param oid place to store ASN.1 OID string pointer
* \param olen length of the OID
* *
* \return 0 if successful, or POLARSSL_ERR_OID_NOT_FOUND * \return 0 if successful, or POLARSSL_ERR_OID_NOT_FOUND
*/ */
int oid_get_oid_by_md( md_type_t md_alg, const char **oid_str ); int oid_get_oid_by_md( md_type_t md_alg, const char **oid, size_t *olen );
#if defined(POLARSSL_CIPHER_C) #if defined(POLARSSL_CIPHER_C)
/** /**

11
library/oid.c
View File

@ -93,12 +93,13 @@ int FN_NAME( const asn1_buf *oid, ATTR1_TYPE * ATTR1, ATTR2_TYPE * ATTR2 ) \
* attribute from a oid_descriptor_t wrapper. * attribute from a oid_descriptor_t wrapper.
*/ */
#define FN_OID_GET_OID_BY_ATTR1(FN_NAME, TYPE_T, LIST, ATTR1_TYPE, ATTR1) \ #define FN_OID_GET_OID_BY_ATTR1(FN_NAME, TYPE_T, LIST, ATTR1_TYPE, ATTR1) \
int FN_NAME( ATTR1_TYPE ATTR1, const char **oid_str ) \ int FN_NAME( ATTR1_TYPE ATTR1, const char **oid, size_t *olen ) \
{ \ { \
const TYPE_T *cur = LIST; \ const TYPE_T *cur = LIST; \
while( cur->descriptor.asn1 != NULL ) { \ while( cur->descriptor.asn1 != NULL ) { \
if( cur->ATTR1 == ATTR1 ) { \ if( cur->ATTR1 == ATTR1 ) { \
*oid_str = cur->descriptor.asn1; \ *oid = cur->descriptor.asn1; \
*olen = cur->descriptor.asn1_len; \
return( 0 ); \ return( 0 ); \
} \ } \
cur++; \ cur++; \
@ -112,12 +113,14 @@ int FN_NAME( ATTR1_TYPE ATTR1, const char **oid_str ) \
*/ */
#define FN_OID_GET_OID_BY_ATTR2(FN_NAME, TYPE_T, LIST, ATTR1_TYPE, ATTR1, \ #define FN_OID_GET_OID_BY_ATTR2(FN_NAME, TYPE_T, LIST, ATTR1_TYPE, ATTR1, \
ATTR2_TYPE, ATTR2) \ ATTR2_TYPE, ATTR2) \
int FN_NAME( ATTR1_TYPE ATTR1, ATTR2_TYPE ATTR2, const char **oid_str ) \ int FN_NAME( ATTR1_TYPE ATTR1, ATTR2_TYPE ATTR2, const char **oid , \
size_t *olen ) \
{ \ { \
const TYPE_T *cur = LIST; \ const TYPE_T *cur = LIST; \
while( cur->descriptor.asn1 != NULL ) { \ while( cur->descriptor.asn1 != NULL ) { \
if( cur->ATTR1 == ATTR1 && cur->ATTR2 == ATTR2 ) { \ if( cur->ATTR1 == ATTR1 && cur->ATTR2 == ATTR2 ) { \
*oid_str = cur->descriptor.asn1; \ *oid = cur->descriptor.asn1; \
*olen = cur->descriptor.asn1_len; \
return( 0 ); \ return( 0 ); \
} \ } \
cur++; \ cur++; \

3
library/rsa.c
View File

@ -907,10 +907,9 @@ int rsa_rsassa_pkcs1_v15_sign( rsa_context *ctx,
if( md_info == NULL ) if( md_info == NULL )
return( POLARSSL_ERR_RSA_BAD_INPUT_DATA ); return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
if( oid_get_oid_by_md( md_alg, &oid ) != 0 ) if( oid_get_oid_by_md( md_alg, &oid, &oid_size ) != 0 )
return( POLARSSL_ERR_RSA_BAD_INPUT_DATA ); return( POLARSSL_ERR_RSA_BAD_INPUT_DATA );
oid_size = strlen( oid );
nb_pad -= 10 + oid_size; nb_pad -= 10 + oid_size;
hashlen = md_get_size( md_info ); hashlen = md_get_size( md_info );

19
library/x509write.c
View File

@ -581,7 +581,8 @@ static int x509_write_names( unsigned char **p, unsigned char *start,
} }
static int x509_write_sig( unsigned char **p, unsigned char *start, static int x509_write_sig( unsigned char **p, unsigned char *start,
const char *oid, unsigned char *sig, size_t size ) const char *oid, size_t oid_len,
unsigned char *sig, size_t size )
{ {
int ret; int ret;
size_t len = 0; size_t len = 0;
@ -602,7 +603,7 @@ static int x509_write_sig( unsigned char **p, unsigned char *start,
// Write OID // Write OID
// //
ASN1_CHK_ADD( len, asn1_write_algorithm_identifier( p, start, oid, ASN1_CHK_ADD( len, asn1_write_algorithm_identifier( p, start, oid,
strlen( oid ) ) ); oid_len ) );
return( len ); return( len );
} }
@ -693,6 +694,7 @@ int x509write_csr_der( x509write_csr *ctx, unsigned char *buf, size_t size )
{ {
int ret; int ret;
const char *sig_oid; const char *sig_oid;
size_t sig_oid_len = 0;
unsigned char *c, *c2; unsigned char *c, *c2;
unsigned char hash[64]; unsigned char hash[64];
unsigned char sig[POLARSSL_MPI_MAX_SIZE]; unsigned char sig[POLARSSL_MPI_MAX_SIZE];
@ -768,10 +770,12 @@ int x509write_csr_der( x509write_csr *ctx, unsigned char *buf, size_t size )
// Generate correct OID // Generate correct OID
// //
ret = oid_get_oid_by_sig_alg( POLARSSL_PK_RSA, ctx->md_alg, &sig_oid ); ret = oid_get_oid_by_sig_alg( POLARSSL_PK_RSA, ctx->md_alg, &sig_oid,
&sig_oid_len );
c2 = buf + size - 1; c2 = buf + size - 1;
ASN1_CHK_ADD( sig_len, x509_write_sig( &c2, buf, sig_oid, sig, ctx->rsa->len ) ); ASN1_CHK_ADD( sig_len, x509_write_sig( &c2, buf, sig_oid, sig_oid_len,
sig, ctx->rsa->len ) );
c2 -= len; c2 -= len;
memcpy( c2, c, len ); memcpy( c2, c, len );
@ -787,6 +791,7 @@ int x509write_crt_der( x509write_cert *ctx, unsigned char *buf, size_t size )
{ {
int ret; int ret;
const char *sig_oid; const char *sig_oid;
size_t sig_oid_len = 0;
unsigned char *c, *c2; unsigned char *c, *c2;
unsigned char hash[64]; unsigned char hash[64];
unsigned char sig[POLARSSL_MPI_MAX_SIZE]; unsigned char sig[POLARSSL_MPI_MAX_SIZE];
@ -798,7 +803,8 @@ int x509write_crt_der( x509write_cert *ctx, unsigned char *buf, size_t size )
// Generate correct OID // Generate correct OID
// //
ret = oid_get_oid_by_sig_alg( POLARSSL_PK_RSA, ctx->md_alg, &sig_oid ); ret = oid_get_oid_by_sig_alg( POLARSSL_PK_RSA, ctx->md_alg, &sig_oid,
&sig_oid_len );
if( ret != 0 ) if( ret != 0 )
return( ret ); return( ret );
@ -893,7 +899,8 @@ int x509write_crt_der( x509write_cert *ctx, unsigned char *buf, size_t size )
rsa_pkcs1_sign( ctx->issuer_key, NULL, NULL, RSA_PRIVATE, ctx->md_alg, 0, hash, sig ); rsa_pkcs1_sign( ctx->issuer_key, NULL, NULL, RSA_PRIVATE, ctx->md_alg, 0, hash, sig );
c2 = buf + size - 1; c2 = buf + size - 1;
ASN1_CHK_ADD( sig_len, x509_write_sig( &c2, buf, sig_oid, sig, ctx->issuer_key->len ) ); ASN1_CHK_ADD( sig_len, x509_write_sig( &c2, buf, sig_oid, sig_oid_len,
sig, ctx->issuer_key->len ) );
c2 -= len; c2 -= len;
memcpy( c2, c, len ); memcpy( c2, c, len );