Mercurial > dropbear
comparison keyimport.c @ 1638:315fcba6960e
dropbearconvert: keyimport.c: fix BER encoding of secp521r1 keys (#69)
keysizes >= 128 octets will be encoded with a 3 byte header
which must be accounted by the optional-header
Reproduce:
master:~/build/dropbear$ ./dropbearkey -t ecdsa -s 521 -f K
Generating 521 bit ecdsa key, this may take a while...
master:~/build/dropbear$ ./dropbearconvert d o K L
Key is a ecdsa-sha2-nistp521 key
Wrote key to 'L'
master:~/build/dropbear$ openssl ec < L
read EC key
unable to load Key
139769806448384:error:0D07209B:asn1 encoding routines:ASN1_get_object:too long:crypto/asn1/asn1_lib.c:91:
| author | Christian Hohnstädt <christian@hohnstaedt.de> |
|---|---|
| date | Wed, 20 Mar 2019 16:42:47 +0100 |
| parents | 2d450c1056e3 |
| children | d32bcb5c557d |
comparison
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| 1637:cf8dc6204fb6 | 1638:315fcba6960e |
|---|---|
| 1095 buf_incrwritepos(seq_buf, | 1095 buf_incrwritepos(seq_buf, |
| 1096 ber_write_id_len(buf_getwriteptr(seq_buf, 10), 6, curve_oid_len, 0)); | 1096 ber_write_id_len(buf_getwriteptr(seq_buf, 10), 6, curve_oid_len, 0)); |
| 1097 buf_putbytes(seq_buf, curve_oid, curve_oid_len); | 1097 buf_putbytes(seq_buf, curve_oid, curve_oid_len); |
| 1098 | 1098 |
| 1099 buf_incrwritepos(seq_buf, | 1099 buf_incrwritepos(seq_buf, |
| 1100 ber_write_id_len(buf_getwriteptr(seq_buf, 10), 1, 2+1+pubkey_size, 0xa0)); | 1100 ber_write_id_len(buf_getwriteptr(seq_buf, 10), 1, |
| 1101 (pubkey_size +1 < 128 ? 2 : 3 ) +1 +pubkey_size, 0xa0)); | |
| 1102 | |
| 1101 buf_incrwritepos(seq_buf, | 1103 buf_incrwritepos(seq_buf, |
| 1102 ber_write_id_len(buf_getwriteptr(seq_buf, 10), 3, 1+pubkey_size, 0)); | 1104 ber_write_id_len(buf_getwriteptr(seq_buf, 10), 3, 1+pubkey_size, 0)); |
| 1103 buf_putbyte(seq_buf, 0); | 1105 buf_putbyte(seq_buf, 0); |
| 1104 err = ecc_ansi_x963_export(*eck, buf_getwriteptr(seq_buf, pubkey_size), &pubkey_size); | 1106 err = ecc_ansi_x963_export(*eck, buf_getwriteptr(seq_buf, pubkey_size), &pubkey_size); |
| 1105 if (err != CRYPT_OK) { | 1107 if (err != CRYPT_OK) { |