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Omit version from X.509 v1 certificates

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The version field in an X.509 certificate is optional and defaults to v1, so it
may be omitted in this case.
This commit is contained in:
Hanno Becker 2017-09-13 11:59:26 +01:00
parent d7f3520360
commit 476986547b
2 changed files with 28 additions and 23 deletions
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19
library/x509write_crt.c
View File

@ -395,16 +395,21 @@ int mbedtls_x509write_crt_der( mbedtls_x509write_cert *ctx, unsigned char *buf,
/* /*
* Version ::= INTEGER { v1(0), v2(1), v3(2) } * Version ::= INTEGER { v1(0), v2(1), v3(2) }
*/ */
sub_len = 0;
MBEDTLS_ASN1_CHK_ADD( sub_len, mbedtls_asn1_write_int( &c, tmp_buf, ctx->version ) ); /* Can be omitted for v1 */
len += sub_len; if( ctx->version > 0 )
MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, tmp_buf, sub_len ) ); {
MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, tmp_buf, MBEDTLS_ASN1_CONTEXT_SPECIFIC | sub_len = 0;
MBEDTLS_ASN1_CONSTRUCTED | 0 ) ); MBEDTLS_ASN1_CHK_ADD( sub_len, mbedtls_asn1_write_int( &c, tmp_buf, ctx->version ) );
len += sub_len;
MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, tmp_buf, sub_len ) );
MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, tmp_buf, MBEDTLS_ASN1_CONTEXT_SPECIFIC |
MBEDTLS_ASN1_CONSTRUCTED | 0 ) );
}
MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, tmp_buf, len ) ); MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_len( &c, tmp_buf, len ) );
MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, tmp_buf, MBEDTLS_ASN1_CONSTRUCTED | MBEDTLS_ASN1_CHK_ADD( len, mbedtls_asn1_write_tag( &c, tmp_buf, MBEDTLS_ASN1_CONSTRUCTED |
MBEDTLS_ASN1_SEQUENCE ) ); MBEDTLS_ASN1_SEQUENCE ) );
/* /*
* Make signature * Make signature

32
tests/data_files/server1.v1.crt
View File

@ -1,18 +1,18 @@
-----BEGIN CERTIFICATE----- -----BEGIN CERTIFICATE-----
MIIC9DCCAdygAwIBAAIBATANBgkqhkiG9w0BAQUFADA7MQswCQYDVQQGEwJOTDER MIIC6zCCAdMCAQEwDQYJKoZIhvcNAQEFBQAwOzELMAkGA1UEBhMCTkwxETAPBgNV
MA8GA1UEChMIUG9sYXJTU0wxGTAXBgNVBAMTEFBvbGFyU1NMIFRlc3QgQ0EwHhcN BAoTCFBvbGFyU1NMMRkwFwYDVQQDExBQb2xhclNTTCBUZXN0IENBMB4XDTExMDIx
MTEwMjEyMTQ0NDA2WhcNMjEwMjEyMTQ0NDA2WjA8MQswCQYDVQQGEwJOTDERMA8G MjE0NDQwNloXDTIxMDIxMjE0NDQwNlowPDELMAkGA1UEBhMCTkwxETAPBgNVBAoT
A1UEChMIUG9sYXJTU0wxGjAYBgNVBAMTEVBvbGFyU1NMIFNlcnZlciAxMIIBIjAN CFBvbGFyU1NMMRowGAYDVQQDExFQb2xhclNTTCBTZXJ2ZXIgMTCCASIwDQYJKoZI
BgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAqQIfPUBq1VVTi/027oJlLhVhXom/ hvcNAQEBBQADggEPADCCAQoCggEBAKkCHz1AatVVU4v9Nu6CZS4VYV6Jv7joRZDb
uOhFkNvuiBZS0/FDUEeWEllkh2v9K+BG+XO+3c+S4ZFb7Wagb4kpeUWA0INq1UFD 7ogWUtPxQ1BHlhJZZIdr/SvgRvlzvt3PkuGRW+1moG+JKXlFgNCDatVBQ3dfOXwJ
d185fAkER4KwVzlw7aPsFRkeqDMIR8EFQqn9TMO0390GH00QUUBncxMPQPhtgSVf BEeCsFc5cO2j7BUZHqgzCEfBBUKp/UzDtN/dBh9NEFFAZ3MTD0D4bYElXwqxU8Yw
CrFTxjB+FTms+Vruf5KepgVb5xOXhbUjktnUJAbVCSWJdQfdphqPPwkZvq1lLGTr fhU5rPla7n+SnqYFW+cTl4W1I5LZ1CQG1QkliXUH3aYajz8JGb6tZSxk65Wb3P5B
lZvc/kFeF6babFtpzAK6FCwWJJxK3M3Q91Jnc/EtoCP9fvQxyi1wyokLBNsupk9w Xhem2mxbacwCuhQsFiScStzN0PdSZ3PxLaAj/X70McotcMqJCwTbLqZPcG6ezr1Y
bp7OvViJ4lNZnm5akmXiiD8MlBmj3eXonZUT7Snbq3AS3FrKaxerUoJUsQIDAQAB ieJTWZ5uWpJl4og/DJQZo93l6J2VE+0p26twEtxaymsXq1KCVLECAwEAATANBgkq
owIwADANBgkqhkiG9w0BAQUFAAOCAQEAoZVuVi7bIslKgMJhejSFXiO+ICMz1fmK hkiG9w0BAQUFAAOCAQEAPMRfR9ql7b06b5DdNyJhD96lBzuVSUOW2MgVHT2Vs7NB
b0tPN68mRYhI/gsjRT0cmX6GUNrg+U5mcBWhMwHgyvx1CARU4YToKZxcXGNL0DPd tk5L1htpA5N4uaIeyt6YM0xU0nHdHUKaywNcDiXcnzvRoctGWiWdpcEvdA0rYRF5
Z1hF8nCrJCZBQvNuWE7s0ufw92xz5ZfuKkVxi94RYR529F6gzgl4rpX8UQVu2ym/ T4MGPpjEuLJcG3aTU8mV8wUEbrY6IEnSpC1G9iasjhkwAF7pb/Ic8+/riwmPD/Fh
9pTlHKr4MKi9LNppyJMS89uRcb2FJFMdhAKbhNtbIjI9qGZ7x//0belAaWhq389u zBrRfBCgi5VXbX9IvY+yQHRVRal8y+n4eh9/hFxBKDbvuidFropGzcuparEwCIRi
6XWFnZt35PU6Zz6YbAQ5pjZYsTaohuufgrpOlFPUuc4uR+RfGHIQ6id12lZaQC2m U7L/7aZ3A5wsQp9GPDliSjpeYCf5tok/bvjG4xU041pGQ7yVNpu2mEIoqDz9v+Ay
OFIBDcU0x1cFfPfMgVdBLf6klPt/v/tD77mwx0eztSp28NIf+ACw8A== IKqsWradEnFG/1ov78a2RB+2+iIPE4iCDtmKUkgPjQ==
-----END CERTIFICATE----- -----END CERTIFICATE-----