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Don't add extensions for X.509 non-v3 certificates

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This commit removes extension-writing code for X.509 non-v3 certificates from
x509write_crt_der. Previously, even if no extensions were present an
empty sequence would have been added.
This commit is contained in:
Hanno Becker 2017-10-05 07:49:21 +01:00
parent 3c89dca09e
commit 7c3c97ac13
1 changed files with 13 additions and 7 deletions
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20
library/x509write_crt.c
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@ -327,13 +327,19 @@ int x509write_crt_der( x509write_cert *ctx, unsigned char *buf, size_t size,
/*
* Extensions ::= SEQUENCE SIZE (1..MAX) OF Extension
*/
ASN1_CHK_ADD( len, x509_write_extensions( &c, tmp_buf, ctx->extensions ) );
ASN1_CHK_ADD( len, asn1_write_len( &c, tmp_buf, len ) );
ASN1_CHK_ADD( len, asn1_write_tag( &c, tmp_buf, ASN1_CONSTRUCTED |
ASN1_SEQUENCE ) );
ASN1_CHK_ADD( len, asn1_write_len( &c, tmp_buf, len ) );
ASN1_CHK_ADD( len, asn1_write_tag( &c, tmp_buf, ASN1_CONTEXT_SPECIFIC |
ASN1_CONSTRUCTED | 3 ) );
/* Only for v3 */
if( ctx->version == X509_CRT_VERSION_3 )
{
ASN1_CHK_ADD( len, x509_write_extensions( &c, tmp_buf,
ctx->extensions ) );
ASN1_CHK_ADD( len, asn1_write_len( &c, tmp_buf, len ) );
ASN1_CHK_ADD( len, asn1_write_tag( &c, tmp_buf, ASN1_CONSTRUCTED |
ASN1_SEQUENCE ) );
ASN1_CHK_ADD( len, asn1_write_len( &c, tmp_buf, len ) );
ASN1_CHK_ADD( len, asn1_write_tag( &c, tmp_buf, ASN1_CONTEXT_SPECIFIC |
ASN1_CONSTRUCTED | 3 ) );
}
/*
* SubjectPublicKeyInfo