diff options
Diffstat (limited to 'crypto/rsakey.c')
| -rw-r--r-- | crypto/rsakey.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/crypto/rsakey.c b/crypto/rsakey.c index cc40e072f0..7d6f273aef 100644 --- a/crypto/rsakey.c +++ b/crypto/rsakey.c @@ -19,6 +19,8 @@ * */ +#include "qemu/osdep.h" +#include "der.h" #include "rsakey.h" void qcrypto_akcipher_rsakey_free(QCryptoAkCipherRSAKey *rsa_key) @@ -37,6 +39,46 @@ void qcrypto_akcipher_rsakey_free(QCryptoAkCipherRSAKey *rsa_key) g_free(rsa_key); } +/** + * PKCS#8 private key info for RSA + * + * PrivateKeyInfo ::= SEQUENCE { + * version INTEGER, + * privateKeyAlgorithm PrivateKeyAlgorithmIdentifier, + * privateKey OCTET STRING, + * attributes [0] IMPLICIT Attributes OPTIONAL + * } + */ +void qcrypto_akcipher_rsakey_export_p8info(const uint8_t *key, + size_t keylen, + uint8_t **dst, + size_t *dlen) +{ + QCryptoEncodeContext *ctx = qcrypto_der_encode_ctx_new(); + uint8_t version = 0; + + qcrypto_der_encode_seq_begin(ctx); + + /* version */ + qcrypto_der_encode_int(ctx, &version, sizeof(version)); + + /* algorithm identifier */ + qcrypto_der_encode_seq_begin(ctx); + qcrypto_der_encode_oid(ctx, (uint8_t *)QCRYPTO_OID_rsaEncryption, + sizeof(QCRYPTO_OID_rsaEncryption) - 1); + qcrypto_der_encode_null(ctx); + qcrypto_der_encode_seq_end(ctx); + + /* RSA private key */ + qcrypto_der_encode_octet_str(ctx, key, keylen); + + qcrypto_der_encode_seq_end(ctx); + + *dlen = qcrypto_der_encode_ctx_buffer_len(ctx); + *dst = g_malloc(*dlen); + qcrypto_der_encode_ctx_flush_and_free(ctx, *dst); +} + #if defined(CONFIG_NETTLE) && defined(CONFIG_HOGWEED) #include "rsakey-nettle.c.inc" #else |