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-rw-r--r--crypto/asymmetric_keys/asym_tpm.c9
-rw-r--r--crypto/asymmetric_keys/public_key.c72
-rw-r--r--crypto/asymmetric_keys/x509.asn12
-rw-r--r--crypto/asymmetric_keys/x509_cert_parser.c31
-rw-r--r--crypto/testmgr.c24
-rw-r--r--crypto/testmgr.h5
-rw-r--r--include/crypto/akcipher.h18
-rw-r--r--include/crypto/public_key.h4
8 files changed, 136 insertions, 29 deletions
diff --git a/crypto/asymmetric_keys/asym_tpm.c b/crypto/asymmetric_keys/asym_tpm.c
index 402fc34ca044..76d2ce3a1b5b 100644
--- a/crypto/asymmetric_keys/asym_tpm.c
+++ b/crypto/asymmetric_keys/asym_tpm.c
@@ -276,6 +276,10 @@ static int tpm_sign(struct tpm_buf *tb,
return datalen;
}
+
+/* Room to fit two u32 zeros for algo id and parameters length. */
+#define SETKEY_PARAMS_SIZE (sizeof(u32) * 2)
+
/*
* Maximum buffer size for the BER/DER encoded public key. The public key
* is of the form SEQUENCE { INTEGER n, INTEGER e } where n is a maximum 2048
@@ -286,8 +290,9 @@ static int tpm_sign(struct tpm_buf *tb,
* - 257 bytes of n
* - max 2 bytes for INTEGER e type/length
* - 3 bytes of e
+ * - 4+4 of zeros for set_pub_key parameters (SETKEY_PARAMS_SIZE)
*/
-#define PUB_KEY_BUF_SIZE (4 + 4 + 257 + 2 + 3)
+#define PUB_KEY_BUF_SIZE (4 + 4 + 257 + 2 + 3 + SETKEY_PARAMS_SIZE)
/*
* Provide a part of a description of the key for /proc/keys.
@@ -364,6 +369,8 @@ static uint32_t derive_pub_key(const void *pub_key, uint32_t len, uint8_t *buf)
cur = encode_tag_length(cur, 0x02, sizeof(e));
memcpy(cur, e, sizeof(e));
cur += sizeof(e);
+ /* Zero parameters to satisfy set_pub_key ABI. */
+ memset(cur, 0, SETKEY_PARAMS_SIZE);
return cur - buf;
}
diff --git a/crypto/asymmetric_keys/public_key.c b/crypto/asymmetric_keys/public_key.c
index 33093b7bcc47..77e0ae7840ff 100644
--- a/crypto/asymmetric_keys/public_key.c
+++ b/crypto/asymmetric_keys/public_key.c
@@ -45,6 +45,7 @@ void public_key_free(struct public_key *key)
{
if (key) {
kfree(key->key);
+ kfree(key->params);
kfree(key);
}
}
@@ -94,6 +95,12 @@ int software_key_determine_akcipher(const char *encoding,
return -ENOPKG;
}
+static u8 *pkey_pack_u32(u8 *dst, u32 val)
+{
+ memcpy(dst, &val, sizeof(val));
+ return dst + sizeof(val);
+}
+
/*
* Query information about a key.
*/
@@ -103,6 +110,7 @@ static int software_key_query(const struct kernel_pkey_params *params,
struct crypto_akcipher *tfm;
struct public_key *pkey = params->key->payload.data[asym_crypto];
char alg_name[CRYPTO_MAX_ALG_NAME];
+ u8 *key, *ptr;
int ret, len;
ret = software_key_determine_akcipher(params->encoding,
@@ -115,14 +123,22 @@ static int software_key_query(const struct kernel_pkey_params *params,
if (IS_ERR(tfm))
return PTR_ERR(tfm);
+ key = kmalloc(pkey->keylen + sizeof(u32) * 2 + pkey->paramlen,
+ GFP_KERNEL);
+ if (!key)
+ goto error_free_tfm;
+ memcpy(key, pkey->key, pkey->keylen);
+ ptr = key + pkey->keylen;
+ ptr = pkey_pack_u32(ptr, pkey->algo);
+ ptr = pkey_pack_u32(ptr, pkey->paramlen);
+ memcpy(ptr, pkey->params, pkey->paramlen);
+
if (pkey->key_is_private)
- ret = crypto_akcipher_set_priv_key(tfm,
- pkey->key, pkey->keylen);
+ ret = crypto_akcipher_set_priv_key(tfm, key, pkey->keylen);
else
- ret = crypto_akcipher_set_pub_key(tfm,
- pkey->key, pkey->keylen);
+ ret = crypto_akcipher_set_pub_key(tfm, key, pkey->keylen);
if (ret < 0)
- goto error_free_tfm;
+ goto error_free_key;
len = crypto_akcipher_maxsize(tfm);
info->key_size = len * 8;
@@ -137,6 +153,8 @@ static int software_key_query(const struct kernel_pkey_params *params,
KEYCTL_SUPPORTS_SIGN);
ret = 0;
+error_free_key:
+ kfree(key);
error_free_tfm:
crypto_free_akcipher(tfm);
pr_devel("<==%s() = %d\n", __func__, ret);
@@ -155,6 +173,7 @@ static int software_key_eds_op(struct kernel_pkey_params *params,
struct crypto_wait cwait;
struct scatterlist in_sg, out_sg;
char alg_name[CRYPTO_MAX_ALG_NAME];
+ char *key, *ptr;
int ret;
pr_devel("==>%s()\n", __func__);
@@ -173,14 +192,23 @@ static int software_key_eds_op(struct kernel_pkey_params *params,
if (!req)
goto error_free_tfm;
+ key = kmalloc(pkey->keylen + sizeof(u32) * 2 + pkey->paramlen,
+ GFP_KERNEL);
+ if (!key)
+ goto error_free_req;
+
+ memcpy(key, pkey->key, pkey->keylen);
+ ptr = key + pkey->keylen;
+ ptr = pkey_pack_u32(ptr, pkey->algo);
+ ptr = pkey_pack_u32(ptr, pkey->paramlen);
+ memcpy(ptr, pkey->params, pkey->paramlen);
+
if (pkey->key_is_private)
- ret = crypto_akcipher_set_priv_key(tfm,
- pkey->key, pkey->keylen);
+ ret = crypto_akcipher_set_priv_key(tfm, key, pkey->keylen);
else
- ret = crypto_akcipher_set_pub_key(tfm,
- pkey->key, pkey->keylen);
+ ret = crypto_akcipher_set_pub_key(tfm, key, pkey->keylen);
if (ret)
- goto error_free_req;
+ goto error_free_key;
sg_init_one(&in_sg, in, params->in_len);
sg_init_one(&out_sg, out, params->out_len);
@@ -210,6 +238,8 @@ static int software_key_eds_op(struct kernel_pkey_params *params,
if (ret == 0)
ret = req->dst_len;
+error_free_key:
+ kfree(key);
error_free_req:
akcipher_request_free(req);
error_free_tfm:
@@ -229,6 +259,7 @@ int public_key_verify_signature(const struct public_key *pkey,
struct akcipher_request *req;
struct scatterlist src_sg[2];
char alg_name[CRYPTO_MAX_ALG_NAME];
+ char *key, *ptr;
int ret;
pr_devel("==>%s()\n", __func__);
@@ -252,14 +283,23 @@ int public_key_verify_signature(const struct public_key *pkey,
if (!req)
goto error_free_tfm;
+ key = kmalloc(pkey->keylen + sizeof(u32) * 2 + pkey->paramlen,
+ GFP_KERNEL);
+ if (!key)
+ goto error_free_req;
+
+ memcpy(key, pkey->key, pkey->keylen);
+ ptr = key + pkey->keylen;
+ ptr = pkey_pack_u32(ptr, pkey->algo);
+ ptr = pkey_pack_u32(ptr, pkey->paramlen);
+ memcpy(ptr, pkey->params, pkey->paramlen);
+
if (pkey->key_is_private)
- ret = crypto_akcipher_set_priv_key(tfm,
- pkey->key, pkey->keylen);
+ ret = crypto_akcipher_set_priv_key(tfm, key, pkey->keylen);
else
- ret = crypto_akcipher_set_pub_key(tfm,
- pkey->key, pkey->keylen);
+ ret = crypto_akcipher_set_pub_key(tfm, key, pkey->keylen);
if (ret)
- goto error_free_req;
+ goto error_free_key;
sg_init_table(src_sg, 2);
sg_set_buf(&src_sg[0], sig->s, sig->s_size);
@@ -272,6 +312,8 @@ int public_key_verify_signature(const struct public_key *pkey,
crypto_req_done, &cwait);
ret = crypto_wait_req(crypto_akcipher_verify(req), &cwait);
+error_free_key:
+ kfree(key);
error_free_req:
akcipher_request_free(req);
error_free_tfm:
diff --git a/crypto/asymmetric_keys/x509.asn1 b/crypto/asymmetric_keys/x509.asn1
index aae0cde414e2..5c9f4e4a5231 100644
--- a/crypto/asymmetric_keys/x509.asn1
+++ b/crypto/asymmetric_keys/x509.asn1
@@ -22,7 +22,7 @@ CertificateSerialNumber ::= INTEGER
AlgorithmIdentifier ::= SEQUENCE {
algorithm OBJECT IDENTIFIER ({ x509_note_OID }),
- parameters ANY OPTIONAL
+ parameters ANY OPTIONAL ({ x509_note_params })
}
Name ::= SEQUENCE OF RelativeDistinguishedName
diff --git a/crypto/asymmetric_keys/x509_cert_parser.c b/crypto/asymmetric_keys/x509_cert_parser.c
index 991f4d735a4e..b2cdf2db1987 100644
--- a/crypto/asymmetric_keys/x509_cert_parser.c
+++ b/crypto/asymmetric_keys/x509_cert_parser.c
@@ -26,6 +26,9 @@ struct x509_parse_context {
const void *cert_start; /* Start of cert content */
const void *key; /* Key data */
size_t key_size; /* Size of key data */
+ const void *params; /* Key parameters */
+ size_t params_size; /* Size of key parameters */
+ enum OID key_algo; /* Public key algorithm */
enum OID last_oid; /* Last OID encountered */
enum OID algo_oid; /* Algorithm OID */
unsigned char nr_mpi; /* Number of MPIs stored */
@@ -109,6 +112,13 @@ struct x509_certificate *x509_cert_parse(const void *data, size_t datalen)
cert->pub->keylen = ctx->key_size;
+ cert->pub->params = kmemdup(ctx->params, ctx->params_size, GFP_KERNEL);
+ if (!cert->pub->params)
+ goto error_decode;
+
+ cert->pub->paramlen = ctx->params_size;
+ cert->pub->algo = ctx->key_algo;
+
/* Grab the signature bits */
ret = x509_get_sig_params(cert);
if (ret < 0)
@@ -401,6 +411,27 @@ int x509_note_subject(void *context, size_t hdrlen,
}
/*
+ * Extract the parameters for the public key
+ */
+int x509_note_params(void *context, size_t hdrlen,
+ unsigned char tag,
+ const void *value, size_t vlen)
+{
+ struct x509_parse_context *ctx = context;
+
+ /*
+ * AlgorithmIdentifier is used three times in the x509, we should skip
+ * first and ignore third, using second one which is after subject and
+ * before subjectPublicKey.
+ */
+ if (!ctx->cert->raw_subject || ctx->key)
+ return 0;
+ ctx->params = value - hdrlen;
+ ctx->params_size = vlen + hdrlen;
+ return 0;
+}
+
+/*
* Extract the data for the public key algorithm
*/
int x509_extract_key_data(void *context, size_t hdrlen,
diff --git a/crypto/testmgr.c b/crypto/testmgr.c
index 21b27996508a..bc382b0c0ac6 100644
--- a/crypto/testmgr.c
+++ b/crypto/testmgr.c
@@ -2585,6 +2585,12 @@ static int alg_test_kpp(const struct alg_test_desc *desc, const char *driver,
return err;
}
+static u8 *test_pack_u32(u8 *dst, u32 val)
+{
+ memcpy(dst, &val, sizeof(val));
+ return dst + sizeof(val);
+}
+
static int test_akcipher_one(struct crypto_akcipher *tfm,
const struct akcipher_testvec *vecs)
{
@@ -2599,6 +2605,7 @@ static int test_akcipher_one(struct crypto_akcipher *tfm,
const char *m, *c;
unsigned int m_size, c_size;
const char *op;
+ u8 *key, *ptr;
if (testmgr_alloc_buf(xbuf))
return err;
@@ -2609,12 +2616,20 @@ static int test_akcipher_one(struct crypto_akcipher *tfm,
crypto_init_wait(&wait);
+ key = kmalloc(vecs->key_len + sizeof(u32) * 2 + vecs->param_len,
+ GFP_KERNEL);
+ if (!key)
+ goto free_xbuf;
+ memcpy(key, vecs->key, vecs->key_len);
+ ptr = key + vecs->key_len;
+ ptr = test_pack_u32(ptr, vecs->algo);
+ ptr = test_pack_u32(ptr, vecs->param_len);
+ memcpy(ptr, vecs->params, vecs->param_len);
+
if (vecs->public_key_vec)
- err = crypto_akcipher_set_pub_key(tfm, vecs->key,
- vecs->key_len);
+ err = crypto_akcipher_set_pub_key(tfm, key, vecs->key_len);
else
- err = crypto_akcipher_set_priv_key(tfm, vecs->key,
- vecs->key_len);
+ err = crypto_akcipher_set_priv_key(tfm, key, vecs->key_len);
if (err)
goto free_req;
@@ -2744,6 +2759,7 @@ free_all:
kfree(outbuf_enc);
free_req:
akcipher_request_free(req);
+ kfree(key);
free_xbuf:
testmgr_free_buf(xbuf);
return err;
diff --git a/crypto/testmgr.h b/crypto/testmgr.h
index f267633cf13a..75d8f8c3e203 100644
--- a/crypto/testmgr.h
+++ b/crypto/testmgr.h
@@ -25,6 +25,8 @@
#ifndef _CRYPTO_TESTMGR_H
#define _CRYPTO_TESTMGR_H
+#include <linux/oid_registry.h>
+
#define MAX_IVLEN 32
/*
@@ -135,13 +137,16 @@ struct drbg_testvec {
struct akcipher_testvec {
const unsigned char *key;
+ const unsigned char *params;
const unsigned char *m;
const unsigned char *c;
unsigned int key_len;
+ unsigned int param_len;
unsigned int m_size;
unsigned int c_size;
bool public_key_vec;
bool siggen_sigver_test;
+ enum OID algo;
};
struct kpp_testvec {
diff --git a/include/crypto/akcipher.h b/include/crypto/akcipher.h
index 2d26939fff51..8884046659a0 100644
--- a/include/crypto/akcipher.h
+++ b/include/crypto/akcipher.h
@@ -74,10 +74,10 @@ struct crypto_akcipher {
* operation
* @set_pub_key: Function invokes the algorithm specific set public key
* function, which knows how to decode and interpret
- * the BER encoded public key
+ * the BER encoded public key and parameters
* @set_priv_key: Function invokes the algorithm specific set private key
* function, which knows how to decode and interpret
- * the BER encoded private key
+ * the BER encoded private key and parameters
* @max_size: Function returns dest buffer size required for a given key.
* @init: Initialize the cryptographic transformation object.
* This function is used to initialize the cryptographic
@@ -379,11 +379,12 @@ static inline int crypto_akcipher_verify(struct akcipher_request *req)
* crypto_akcipher_set_pub_key() - Invoke set public key operation
*
* Function invokes the algorithm specific set key function, which knows
- * how to decode and interpret the encoded key
+ * how to decode and interpret the encoded key and parameters
*
* @tfm: tfm handle
- * @key: BER encoded public key
- * @keylen: length of the key
+ * @key: BER encoded public key, algo OID, paramlen, BER encoded
+ * parameters
+ * @keylen: length of the key (not including other data)
*
* Return: zero on success; error code in case of error
*/
@@ -400,11 +401,12 @@ static inline int crypto_akcipher_set_pub_key(struct crypto_akcipher *tfm,
* crypto_akcipher_set_priv_key() - Invoke set private key operation
*
* Function invokes the algorithm specific set key function, which knows
- * how to decode and interpret the encoded key
+ * how to decode and interpret the encoded key and parameters
*
* @tfm: tfm handle
- * @key: BER encoded private key
- * @keylen: length of the key
+ * @key: BER encoded private key, algo OID, paramlen, BER encoded
+ * parameters
+ * @keylen: length of the key (not including other data)
*
* Return: zero on success; error code in case of error
*/
diff --git a/include/crypto/public_key.h b/include/crypto/public_key.h
index be626eac9113..712fe1214b5f 100644
--- a/include/crypto/public_key.h
+++ b/include/crypto/public_key.h
@@ -15,6 +15,7 @@
#define _LINUX_PUBLIC_KEY_H
#include <linux/keyctl.h>
+#include <linux/oid_registry.h>
/*
* Cryptographic data for the public-key subtype of the asymmetric key type.
@@ -25,6 +26,9 @@
struct public_key {
void *key;
u32 keylen;
+ enum OID algo;
+ void *params;
+ u32 paramlen;
bool key_is_private;
const char *id_type;
const char *pkey_algo;