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Add test for mbedtls_x509write_crt_set_ext_key_usage, and fix reversed order

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Signed-off-by: Dave Rodgman <dave.rodgman@arm.com>
This commit is contained in:
Nicholas Wilson
2015-11-13 14:22:36 +00:00
committed by Dave Rodgman
parent 99a96b1c22
commit ca841d32db
5 changed files with 98 additions and 26 deletions
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14
library/x509write_crt.c
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@ -303,18 +303,22 @@ int mbedtls_x509write_crt_set_ext_key_usage( mbedtls_x509write_cert *ctx,
unsigned char *c = buf + sizeof(buf);
int ret;
size_t len = 0;
const mbedtls_asn1_sequence *last_ext = 0, *ext;
/* We need at least one extension: SEQUENCE SIZE (1..MAX) OF KeyPurposeId */
if( exts == NULL )
return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
while( exts != NULL )
/* Iterate over exts backwards, so we write them out in the requested order */
while( last_ext != exts )
{
if( exts->buf.tag != MBEDTLS_ASN1_OID )
for( ext = exts; ext->next != last_ext; ext = ext->next ) {}
if( ext->buf.tag != MBEDTLS_ASN1_OID )
return( MBEDTLS_ERR_X509_BAD_INPUT_DATA );
MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_raw_buffer( &c, buf, exts->buf.p, exts->buf.len ) );
MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, exts->buf.len ) );
MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_raw_buffer( &c, buf, ext->buf.p, ext->buf.len ) );
MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, ext->buf.len ) );
MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, buf, MBEDTLS_ASN1_OID ) );
exts = exts->next;
last_ext = ext;
}
MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, buf, len ) );