Commit 0576e681e4b492acbb460ce4aaa230a2bb3176df - libcryptx-perl

ECC export/import of EC PUBLIC keys should be compatible with rfc5480 and openssl Karel Miko 10 years ago

1 changed file(s) with 10 addition(s) and 4 deletion(s). Raw diff Collapse all Expand all

+10

-4

src/ltc/pk/ecc/ecc_import_full.c less more

80	80	int ecc_import_full(const unsigned char in, unsigned long inlen, ecc_key key, ltc_ecc_set_type *dp)
81	81	{
82	82	void prime, order, a, b, gx, gy;
83		ltc_asn1_list seq_fieldid[3], seq_curve[3], seq_ecparams[7], seq_priv[5];
84		unsigned char bin_a[ECC_MAXSIZE], bin_b[ECC_MAXSIZE], bin_k[ECC_MAXSIZE], bin_g[2ECC_MAXSIZE+1], bin_xy[2ECC_MAXSIZE+2];
	83	ltc_asn1_list seq_fieldid[2], seq_curve[3], seq_ecparams[6], seq_priv[4];
	84	unsigned char bin_a[ECC_MAXSIZE], bin_b[ECC_MAXSIZE], bin_k[ECC_MAXSIZE], bin_g[2ECC_MAXSIZE+1], bin_xy[2ECC_MAXSIZE+2], bin_seed[128];
85	85	unsigned long len_a, len_b, len_k, len_g, len_xy;
86	86	unsigned long cofactor = 0, ecver = 0, pkver = 0, tmpoid[16];
87	87	/oid_st oid;/

92	92	/* ECParameters SEQUENCE */
93	93	LTC_SET_ASN1(seq_ecparams, 0, LTC_ASN1_SHORT_INTEGER, &ecver, 1UL);
94	94	LTC_SET_ASN1(seq_ecparams, 1, LTC_ASN1_SEQUENCE, seq_fieldid, 2UL);
95		LTC_SET_ASN1(seq_ecparams, 2, LTC_ASN1_SEQUENCE, seq_curve, 2UL);
	95	LTC_SET_ASN1(seq_ecparams, 2, LTC_ASN1_SEQUENCE, seq_curve, 3UL);
96	96	LTC_SET_ASN1(seq_ecparams, 3, LTC_ASN1_OCTET_STRING, bin_g, (unsigned long)2*ECC_MAXSIZE+1);
97	97	LTC_SET_ASN1(seq_ecparams, 4, LTC_ASN1_INTEGER, order, 1UL);
98	98	LTC_SET_ASN1(seq_ecparams, 5, LTC_ASN1_SHORT_INTEGER, &cofactor, 1UL);
	99	seq_ecparams[5].optional = 1;
99	100	/* FieldID SEQUENCE */
100	101	LTC_SET_ASN1(seq_fieldid, 0, LTC_ASN1_OBJECT_IDENTIFIER, tmpoid, 16UL);
101	102	LTC_SET_ASN1(seq_fieldid, 1, LTC_ASN1_INTEGER, prime, 1UL);
102	103	/* Curve SEQUENCE */
103	104	LTC_SET_ASN1(seq_curve, 0, LTC_ASN1_OCTET_STRING, bin_a, (unsigned long)ECC_MAXSIZE);
104	105	LTC_SET_ASN1(seq_curve, 1, LTC_ASN1_OCTET_STRING, bin_b, (unsigned long)ECC_MAXSIZE);
	106	LTC_SET_ASN1(seq_curve, 2, LTC_ASN1_RAW_BIT_STRING, bin_seed, (unsigned long)8*128);
	107	seq_curve[2].optional = 1;
105	108
106	109	len_xy = sizeof(bin_xy);
107	110	/* try to load public key */

128	131	/* ECParameters SEQUENCE */
129	132	LTC_SET_ASN1(seq_ecparams, 0, LTC_ASN1_SHORT_INTEGER, &ecver, 1UL);
130	133	LTC_SET_ASN1(seq_ecparams, 1, LTC_ASN1_SEQUENCE, seq_fieldid, 2UL);
131		LTC_SET_ASN1(seq_ecparams, 2, LTC_ASN1_SEQUENCE, seq_curve, 2UL);
	134	LTC_SET_ASN1(seq_ecparams, 2, LTC_ASN1_SEQUENCE, seq_curve, 3UL);
132	135	LTC_SET_ASN1(seq_ecparams, 3, LTC_ASN1_OCTET_STRING, bin_g, (unsigned long)2*ECC_MAXSIZE+1);
133	136	LTC_SET_ASN1(seq_ecparams, 4, LTC_ASN1_INTEGER, order, 1UL);
134	137	LTC_SET_ASN1(seq_ecparams, 5, LTC_ASN1_SHORT_INTEGER, &cofactor, 1UL);
	138	seq_ecparams[5].optional = 1;
135	139	/* FieldID SEQUENCE */
136	140	LTC_SET_ASN1(seq_fieldid, 0, LTC_ASN1_OBJECT_IDENTIFIER, tmpoid, 16UL);
137	141	LTC_SET_ASN1(seq_fieldid, 1, LTC_ASN1_INTEGER, prime, 1UL);
138	142	/* Curve SEQUENCE */
139	143	LTC_SET_ASN1(seq_curve, 0, LTC_ASN1_OCTET_STRING, bin_a, (unsigned long)ECC_MAXSIZE);
140	144	LTC_SET_ASN1(seq_curve, 1, LTC_ASN1_OCTET_STRING, bin_b, (unsigned long)ECC_MAXSIZE);
	145	LTC_SET_ASN1(seq_curve, 2, LTC_ASN1_RAW_BIT_STRING, bin_seed, (unsigned long)8*128);
	146	seq_curve[2].optional = 1;
141	147
142	148	/* try to load private key */
143	149	if ((err = der_decode_sequence(in, inlen, seq_priv, 3)) != CRYPT_OK) { goto error; }