ocrypto_rsa_key.h

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/*
 * Copyright (c) 2016 - 2024 Nordic Semiconductor ASA
 * Copyright (c) since 2013 Oberon microsystems AG
 *
 * SPDX-License-Identifier: LicenseRef-Nordic-5-Clause
 */
 
 
#ifndef OCRYPTO_RSA_KEY_H
#define OCRYPTO_RSA_KEY_H
 
#include <stddef.h>
#include <stdint.h>
 
 
#ifdef __cplusplus
extern "C" {
#endif
 
 
#define ocrypto_rsa_PUBLIC_EXPONENT 65537  // 2^16 + 1
 
 
typedef struct {
    uint32_t n[32];
    // e = 65537
} ocrypto_rsa1024_pub_key;
 
typedef struct {
    uint32_t n[32];
    uint32_t d[32];  // x^(e*d) mod n == x
} ocrypto_rsa1024_key;
 
typedef struct {
    uint32_t n[32];
    uint32_t p[16], q[16];   // primes, p*q = n
    uint32_t dp[16], dq[16]; // d mod (p-1), d mod (q-1)
    uint32_t qinv[16];       // 1/q mod p
} ocrypto_rsa1024_crt_key;
typedef struct {
    uint32_t n[64];
    // e = 65537
} ocrypto_rsa2048_pub_key;
 
typedef struct {
    uint32_t n[64];
    uint32_t d[64];  // x^(e*d) mod n == x
} ocrypto_rsa2048_key;
 
typedef struct {
    uint32_t n[64];
    uint32_t p[32], q[32];   // primes, p*q = n
    uint32_t dp[32], dq[32]; // d mod (p-1), d mod (q-1)
    uint32_t qinv[32];       // 1/q mod p
} ocrypto_rsa2048_crt_key;
int ocrypto_rsa1024_init_pub_key(
    ocrypto_rsa1024_pub_key *pk,
    const uint8_t *n, size_t n_len);
 
int ocrypto_rsa1024_init_key(
    ocrypto_rsa1024_key *pk,
    const uint8_t *n, size_t n_len,
    const uint8_t *d, size_t d_len);
 
int ocrypto_rsa1024_init_crt_key(
    ocrypto_rsa1024_crt_key *sk,
    const uint8_t *p,    size_t p_len,
    const uint8_t *q,    size_t q_len,
    const uint8_t *dp,   size_t dp_len,
    const uint8_t *dq,   size_t dq_len,
    const uint8_t *qinv, size_t qi_len);
int ocrypto_rsa2048_init_pub_key(
    ocrypto_rsa2048_pub_key *pk,
    const uint8_t *n, size_t n_len);
 
int ocrypto_rsa2048_init_key(ocrypto_rsa2048_key *sk,
    const uint8_t *n, size_t n_len,
    const uint8_t *d, size_t d_len);
 
int ocrypto_rsa2048_init_crt_key(
    ocrypto_rsa2048_crt_key *sk,
    const uint8_t *p,    size_t p_len,
    const uint8_t *q,    size_t q_len,
    const uint8_t *dp,   size_t dp_len,
    const uint8_t *dq,   size_t dq_len,
    const uint8_t *qinv, size_t qi_len);
#ifdef __cplusplus
}
#endif
 
#endif