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[crypto] Parse X.509 raw public key bit string

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OCSP requires direct access to the bit string portion of the subject
public key information.

Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown 2012-05-12 00:58:42 +01:00
parent 4855e86d95
commit e5858c1938
2 changed files with 11 additions and 3 deletions
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10
src/crypto/x509.c
View File

@ -632,6 +632,7 @@ static int x509_parse_public_key ( struct x509_certificate *cert,
const struct asn1_cursor *raw ) {
struct x509_public_key *public_key = &cert->subject.public_key;
struct asn1_algorithm **algorithm = &public_key->algorithm;
struct x509_bit_string *raw_bits = &public_key->raw_bits;
struct asn1_cursor cursor;
int rc;
@ -639,6 +640,8 @@ static int x509_parse_public_key ( struct x509_certificate *cert,
memcpy ( &cursor, raw, sizeof ( cursor ) );
asn1_shrink_any ( &cursor );
memcpy ( &public_key->raw, &cursor, sizeof ( public_key->raw ) );
DBGC2 ( cert, "X509 %p public key is:\n", cert );
DBGC2_HDA ( cert, 0, public_key->raw.data, public_key->raw.len );
/* Enter subjectPublicKeyInfo */
asn1_enter ( &cursor, ASN1_SEQUENCE );
@ -649,8 +652,11 @@ static int x509_parse_public_key ( struct x509_certificate *cert,
return rc;
DBGC2 ( cert, "X509 %p public key algorithm is %s\n",
cert, (*algorithm)->name );
DBGC2 ( cert, "X509 %p public key is:\n", cert );
DBGC2_HDA ( cert, 0, public_key->raw.data, public_key->raw.len );
asn1_skip_any ( &cursor );
/* Parse bit string */
if ( ( rc = x509_parse_bit_string ( cert, raw_bits, &cursor ) ) != 0 )
return rc;
return 0;
}

4
src/include/ipxe/x509.h
View File

@ -54,10 +54,12 @@ struct x509_validity {
/** An X.509 certificate public key */
struct x509_public_key {
/** Raw public key */
/** Raw public key information */
struct asn1_cursor raw;
/** Public key algorithm */
struct asn1_algorithm *algorithm;
/** Raw public key bit string */
struct x509_bit_string raw_bits;
};
/** An X.509 certificate subject */