1 // SPDX-License-Identifier: GPL-2.0-or-later
3  * RSA key extract helper
19 	struct rsa_key *key = context;  in rsa_get_n()  local
23 	/* invalid key provided */  in rsa_get_n()
25 		return -EINVAL;  in rsa_get_n()
30 			n_sz--;  in rsa_get_n()
33 		/* In FIPS mode only allow key size 2K and higher */  in rsa_get_n()
35 			pr_err("RSA: key size not allowed in FIPS mode\n");  in rsa_get_n()
36 			return -EINVAL;  in rsa_get_n()
40 	key->n = value;  in rsa_get_n()
41 	key->n_sz = vlen;  in rsa_get_n()
49 	struct rsa_key *key = context;  in rsa_get_e()  local
51 	/* invalid key provided */  in rsa_get_e()
52 	if (!value || !key->n_sz || !vlen || vlen > key->n_sz)  in rsa_get_e()
53 		return -EINVAL;  in rsa_get_e()
55 	key->e = value;  in rsa_get_e()
56 	key->e_sz = vlen;  in rsa_get_e()
64 	struct rsa_key *key = context;  in rsa_get_d()  local
66 	/* invalid key provided */  in rsa_get_d()
67 	if (!value || !key->n_sz || !vlen || vlen > key->n_sz)  in rsa_get_d()
68 		return -EINVAL;  in rsa_get_d()
70 	key->d = value;  in rsa_get_d()
71 	key->d_sz = vlen;  in rsa_get_d()
79 	struct rsa_key *key = context;  in rsa_get_p()  local
81 	/* invalid key provided */  in rsa_get_p()
82 	if (!value || !vlen || vlen > key->n_sz)  in rsa_get_p()
83 		return -EINVAL;  in rsa_get_p()
85 	key->p = value;  in rsa_get_p()
86 	key->p_sz = vlen;  in rsa_get_p()
94 	struct rsa_key *key = context;  in rsa_get_q()  local
96 	/* invalid key provided */  in rsa_get_q()
97 	if (!value || !vlen || vlen > key->n_sz)  in rsa_get_q()
98 		return -EINVAL;  in rsa_get_q()
100 	key->q = value;  in rsa_get_q()
101 	key->q_sz = vlen;  in rsa_get_q()
109 	struct rsa_key *key = context;  in rsa_get_dp()  local
111 	/* invalid key provided */  in rsa_get_dp()
112 	if (!value || !vlen || vlen > key->n_sz)  in rsa_get_dp()
113 		return -EINVAL;  in rsa_get_dp()
115 	key->dp = value;  in rsa_get_dp()
116 	key->dp_sz = vlen;  in rsa_get_dp()
124 	struct rsa_key *key = context;  in rsa_get_dq()  local
126 	/* invalid key provided */  in rsa_get_dq()
127 	if (!value || !vlen || vlen > key->n_sz)  in rsa_get_dq()
128 		return -EINVAL;  in rsa_get_dq()
130 	key->dq = value;  in rsa_get_dq()
131 	key->dq_sz = vlen;  in rsa_get_dq()
139 	struct rsa_key *key = context;  in rsa_get_qinv()  local
141 	/* invalid key provided */  in rsa_get_qinv()
142 	if (!value || !vlen || vlen > key->n_sz)  in rsa_get_qinv()
143 		return -EINVAL;  in rsa_get_qinv()
145 	key->qinv = value;  in rsa_get_qinv()
146 	key->qinv_sz = vlen;  in rsa_get_qinv()
152  * rsa_parse_pub_key() - decodes the BER encoded buffer and stores in the
153  *                       provided struct rsa_key, pointers to the raw key as is,
156  * @rsa_key:	struct rsa_key key representation
157  * @key:	key in BER format
158  * @key_len:	length of key
162 int rsa_parse_pub_key(struct rsa_key *rsa_key, const void *key,  in rsa_parse_pub_key()  argument
165 	return asn1_ber_decoder(&rsapubkey_decoder, rsa_key, key, key_len);  in rsa_parse_pub_key()
170  * rsa_parse_priv_key() - decodes the BER encoded buffer and stores in the
171  *                        provided struct rsa_key, pointers to the raw key
175  * @rsa_key:	struct rsa_key key representation
176  * @key:	key in BER format
177  * @key_len:	length of key
181 int rsa_parse_priv_key(struct rsa_key *rsa_key, const void *key,  in rsa_parse_priv_key()  argument
184 	return asn1_ber_decoder(&rsaprivkey_decoder, rsa_key, key, key_len);  in rsa_parse_priv_key()