cregit-Linux how code gets into the kernel

Release 4.17 crypto/rsa_helper.c

Directory: crypto
/*
 * RSA key extract helper
 *
 * Copyright (c) 2015, Intel Corporation
 * Authors: Tadeusz Struk <tadeusz.struk@intel.com>
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 */
#include <linux/kernel.h>
#include <linux/export.h>
#include <linux/err.h>
#include <linux/fips.h>
#include <crypto/internal/rsa.h>
#include "rsapubkey.asn1.h"
#include "rsaprivkey.asn1.h"


int rsa_get_n(void *context, size_t hdrlen, unsigned char tag, const void *value, size_t vlen) { struct rsa_key *key = context; const u8 *ptr = value; size_t n_sz = vlen; /* invalid key provided */ if (!value || !vlen) return -EINVAL; if (fips_enabled) { while (n_sz && !*ptr) { ptr++; n_sz--; } /* In FIPS mode only allow key size 2K and higher */ if (n_sz < 256) { pr_err("RSA: key size not allowed in FIPS mode\n"); return -EINVAL; } } key->n = value; key->n_sz = vlen; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Tadeusz Struk6255.86%125.00%
Tudor Ambarus4540.54%125.00%
Stephan Mueller21.80%125.00%
Eric Biggers21.80%125.00%
Total111100.00%4100.00%


int rsa_get_e(void *context, size_t hdrlen, unsigned char tag, const void *value, size_t vlen) { struct rsa_key *key = context; /* invalid key provided */ if (!value || !key->n_sz || !vlen || vlen > key->n_sz) return -EINVAL; key->e = value; key->e_sz = vlen; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Tadeusz Struk4361.43%150.00%
Tudor Ambarus2738.57%150.00%
Total70100.00%2100.00%


int rsa_get_d(void *context, size_t hdrlen, unsigned char tag, const void *value, size_t vlen) { struct rsa_key *key = context; /* invalid key provided */ if (!value || !key->n_sz || !vlen || vlen > key->n_sz) return -EINVAL; key->d = value; key->d_sz = vlen; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Tadeusz Struk5274.29%150.00%
Tudor Ambarus1825.71%150.00%
Total70100.00%2100.00%


int rsa_get_p(void *context, size_t hdrlen, unsigned char tag, const void *value, size_t vlen) { struct rsa_key *key = context; /* invalid key provided */ if (!value || !vlen || vlen > key->n_sz) return -EINVAL; key->p = value; key->p_sz = vlen; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Salvatore Benedetto65100.00%1100.00%
Total65100.00%1100.00%


int rsa_get_q(void *context, size_t hdrlen, unsigned char tag, const void *value, size_t vlen) { struct rsa_key *key = context; /* invalid key provided */ if (!value || !vlen || vlen > key->n_sz) return -EINVAL; key->q = value; key->q_sz = vlen; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Salvatore Benedetto65100.00%1100.00%
Total65100.00%1100.00%


int rsa_get_dp(void *context, size_t hdrlen, unsigned char tag, const void *value, size_t vlen) { struct rsa_key *key = context; /* invalid key provided */ if (!value || !vlen || vlen > key->n_sz) return -EINVAL; key->dp = value; key->dp_sz = vlen; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Salvatore Benedetto65100.00%1100.00%
Total65100.00%1100.00%


int rsa_get_dq(void *context, size_t hdrlen, unsigned char tag, const void *value, size_t vlen) { struct rsa_key *key = context; /* invalid key provided */ if (!value || !vlen || vlen > key->n_sz) return -EINVAL; key->dq = value; key->dq_sz = vlen; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Salvatore Benedetto65100.00%1100.00%
Total65100.00%1100.00%


int rsa_get_qinv(void *context, size_t hdrlen, unsigned char tag, const void *value, size_t vlen) { struct rsa_key *key = context; /* invalid key provided */ if (!value || !vlen || vlen > key->n_sz) return -EINVAL; key->qinv = value; key->qinv_sz = vlen; return 0; }

Contributors

PersonTokensPropCommitsCommitProp
Salvatore Benedetto65100.00%1100.00%
Total65100.00%1100.00%

/** * rsa_parse_pub_key() - decodes the BER encoded buffer and stores in the * provided struct rsa_key, pointers to the raw key as is, * so that the caller can copy it or MPI parse it, etc. * * @rsa_key: struct rsa_key key representation * @key: key in BER format * @key_len: length of key * * Return: 0 on success or error code in case of error */
int rsa_parse_pub_key(struct rsa_key *rsa_key, const void *key, unsigned int key_len) { return asn1_ber_decoder(&rsapubkey_decoder, rsa_key, key, key_len); }

Contributors

PersonTokensPropCommitsCommitProp
Tadeusz Struk3196.88%150.00%
Tudor Ambarus13.12%150.00%
Total32100.00%2100.00%

EXPORT_SYMBOL_GPL(rsa_parse_pub_key); /** * rsa_parse_priv_key() - decodes the BER encoded buffer and stores in the * provided struct rsa_key, pointers to the raw key * as is, so that the caller can copy it or MPI parse it, * etc. * * @rsa_key: struct rsa_key key representation * @key: key in BER format * @key_len: length of key * * Return: 0 on success or error code in case of error */
int rsa_parse_priv_key(struct rsa_key *rsa_key, const void *key, unsigned int key_len) { return asn1_ber_decoder(&rsaprivkey_decoder, rsa_key, key, key_len); }

Contributors

PersonTokensPropCommitsCommitProp
Tadeusz Struk3196.88%266.67%
Tudor Ambarus13.12%133.33%
Total32100.00%3100.00%

EXPORT_SYMBOL_GPL(rsa_parse_priv_key);

Overall Contributors

PersonTokensPropCommitsCommitProp
Salvatore Benedetto32548.22%114.29%
Tadeusz Struk24936.94%228.57%
Tudor Ambarus9413.95%114.29%
Masahiro Yamada20.30%114.29%
Eric Biggers20.30%114.29%
Stephan Mueller20.30%114.29%
Total674100.00%7100.00%
Directory: crypto
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