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Fix boolean values according to DER specs

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In BER encoding, any boolean with a non-zero value is considered as
TRUE. However, DER encoding require a value of 255 (0xFF) for TRUE.

This commit makes `mbedtls_asn1_write_bool` function uses `255` instead
of `1` for BOOLEAN values.

With this fix, boolean values are now reconized by OS X keychain (tested
on OS X 10.11).

Fixes #318.
This commit is contained in:
Jonathan Leroy 2015-10-14 09:41:56 +02:00 committed by Manuel Pégourié-Gonnard
parent 3dd85ddfdf
commit 00c6b3c35a
1 changed files with 1 additions and 1 deletions
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library/asn1write.c
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@ -191,7 +191,7 @@ int mbedtls_asn1_write_bool( unsigned char **p, unsigned char *start, int boolea
if( *p - start < 1 ) if( *p - start < 1 )
return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL ); return( MBEDTLS_ERR_ASN1_BUF_TOO_SMALL );
*--(*p) = (boolean) ? 1 : 0; *--(*p) = (boolean) ? 255 : 0;
len++; len++;
MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) ); MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( p, start, len ) );