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Name	Size	Permission
base16dec.c	2.95 KB	-rw-r--r--
base16enc.c	2.78 KB	-rw-r--r--
base64dec.c	2.95 KB	-rw-r--r--
base64enc.c	2.92 KB	-rw-r--r--
ecc-benchmark.c	7.57 KB	-rw-r--r--
hogweed-benchmark.c	26.42 KB	-rw-r--r--
io.c	3.63 KB	-rw-r--r--
io.h	2.1 KB	-rw-r--r--
nettle-benchmark.c	22.63 KB	-rw-r--r--
nettle-openssl.c	10.68 KB	-rw-r--r--
random-prime.c	3.21 KB	-rw-r--r--
read_rsa_key.c	1.51 KB	-rw-r--r--
rsa-decrypt.c	5.45 KB	-rw-r--r--
rsa-encrypt.c	5.64 KB	-rw-r--r--
rsa-keygen.c	4.56 KB	-rw-r--r--
rsa-session.h	1.68 KB	-rw-r--r--
rsa-sign.c	2.04 KB	-rw-r--r--
rsa-verify.c	2.29 KB	-rw-r--r--
sha-example.c	703 B	-rw-r--r--
timing.c	2.64 KB	-rw-r--r--
timing.h	1.21 KB	-rw-r--r--

Code Editor : rsa-session.h

/* Session key definitions for the rsa-encrypt and rsa-decrypt programs.
 */

#ifndef NETTLE_EXAMPLES_RSA_SESSION_H_INCLUDED
#define NETTLE_EXAMPLES_RSA_SESSION_H_INCLUDED

#include "aes.h"
#include "cbc.h"
#include "hmac.h"

#define RSA_VERSION 1

/* Encryption program using the following file format:

uint32_t version = 1;
     uint32_t nsize;
     uint8_t x[nsize];
     uint8_t encrypted[n];
     uint8_t hmac[SHA1_DIGEST_SIZE];

where x is the data

uint32_t version = 1;
     uint8_t aes_key[AES_KEY_SIZE];
     uint8_t iv[AES_BLOCK_SIZE];
     uint8_t hmac_key[SHA1_DIGEST_SIZE];

of size (4 + AES256_KEY_SIZE + AES_BLOCK_SIZE + SHA1_DIGEST_SIZE) = 72
   bytes, encrypted using rsa-pkcs1.

The cleartext input is encrypted using aes256-cbc. The final block is
   padded as

| data | random octets | padding length |

where the last octet is the padding length, a number between 1 and
   AES_BLOCK_SIZE (inclusive).
*/

struct rsa_session
{
  struct CBC_CTX(struct aes256_ctx, AES_BLOCK_SIZE) aes;
  struct hmac_sha1_ctx hmac;
  struct yarrow256_ctx yarrow;
};

struct rsa_session_info
{
  /* Version followed by aes key, iv and mac key */
  uint8_t key[4 + AES256_KEY_SIZE + AES_BLOCK_SIZE + SHA1_DIGEST_SIZE];
};

#define SESSION_VERSION(s) ((s)->key)
#define SESSION_AES_KEY(s) ((s)->key + 4)
#define SESSION_IV(s) ((s)->key + 4 + AES256_KEY_SIZE)
#define SESSION_HMAC_KEY(s) ((s)->key + 4 + AES256_KEY_SIZE + AES_BLOCK_SIZE)

void
rsa_session_set_encrypt_key(struct rsa_session *ctx,
			    const struct rsa_session_info *key);

void
rsa_session_set_decrypt_key(struct rsa_session *ctx,
			    const struct rsa_session_info *key);

#endif /* NETTLE_EXAMPLES_RSA_SESSION_H_INCLUDED */

${this.title}

Code Editor : rsa-session.h