1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis */ 2 /* SPDX-License-Identifier: Unlicense */ 3 4 /* ---- LTC_BASE64 Routines ---- */ 5 #ifdef LTC_BASE64 6 int base64_encode(const unsigned char *in, unsigned long inlen, 7 char *out, unsigned long *outlen); 8 9 int base64_decode(const char *in, unsigned long inlen, 10 unsigned char *out, unsigned long *outlen); 11 int base64_strict_decode(const char *in, unsigned long inlen, 12 unsigned char *out, unsigned long *outlen); 13 int base64_sane_decode(const char *in, unsigned long inlen, 14 unsigned char *out, unsigned long *outlen); 15 #endif 16 17 #ifdef LTC_BASE64_URL 18 int base64url_encode(const unsigned char *in, unsigned long inlen, 19 char *out, unsigned long *outlen); 20 int base64url_strict_encode(const unsigned char *in, unsigned long inlen, 21 char *out, unsigned long *outlen); 22 23 int base64url_decode(const char *in, unsigned long inlen, 24 unsigned char *out, unsigned long *outlen); 25 int base64url_strict_decode(const char *in, unsigned long inlen, 26 unsigned char *out, unsigned long *outlen); 27 int base64url_sane_decode(const char *in, unsigned long inlen, 28 unsigned char *out, unsigned long *outlen); 29 #endif 30 31 /* ---- BASE32 Routines ---- */ 32 #ifdef LTC_BASE32 33 typedef enum { 34 BASE32_RFC4648 = 0, 35 BASE32_BASE32HEX = 1, 36 BASE32_ZBASE32 = 2, 37 BASE32_CROCKFORD = 3 38 } base32_alphabet; 39 int base32_encode(const unsigned char *in, unsigned long inlen, 40 char *out, unsigned long *outlen, 41 base32_alphabet id); 42 int base32_decode(const char *in, unsigned long inlen, 43 unsigned char *out, unsigned long *outlen, 44 base32_alphabet id); 45 #endif 46 47 /* ---- BASE16 Routines ---- */ 48 #ifdef LTC_BASE16 49 int base16_encode(const unsigned char *in, unsigned long inlen, 50 char *out, unsigned long *outlen, 51 unsigned int options); 52 int base16_decode(const char *in, unsigned long inlen, 53 unsigned char *out, unsigned long *outlen); 54 #endif 55 56 #ifdef LTC_BCRYPT 57 int bcrypt_pbkdf_openbsd(const void *secret, unsigned long secret_len, 58 const unsigned char *salt, unsigned long salt_len, 59 unsigned int rounds, int hash_idx, 60 unsigned char *out, unsigned long *outlen); 61 #endif 62 63 /* ===> LTC_HKDF -- RFC5869 HMAC-based Key Derivation Function <=== */ 64 #ifdef LTC_HKDF 65 66 int hkdf_test(void); 67 68 int hkdf_extract(int hash_idx, 69 const unsigned char *salt, unsigned long saltlen, 70 const unsigned char *in, unsigned long inlen, 71 unsigned char *out, unsigned long *outlen); 72 73 int hkdf_expand(int hash_idx, 74 const unsigned char *info, unsigned long infolen, 75 const unsigned char *in, unsigned long inlen, 76 unsigned char *out, unsigned long outlen); 77 78 int hkdf(int hash_idx, 79 const unsigned char *salt, unsigned long saltlen, 80 const unsigned char *info, unsigned long infolen, 81 const unsigned char *in, unsigned long inlen, 82 unsigned char *out, unsigned long outlen); 83 84 #endif /* LTC_HKDF */ 85 86 /* ---- MEM routines ---- */ 87 int mem_neq(const void *a, const void *b, size_t len); 88 void zeromem(volatile void *out, size_t outlen); 89 void burn_stack(unsigned long len); 90 91 const char *error_to_string(int err); 92 93 extern const char *crypt_build_settings; 94 95 /* ---- HMM ---- */ 96 int crypt_fsa(void *mp, ...); 97 98 /* ---- Dynamic language support ---- */ 99 int crypt_get_constant(const char* namein, int *valueout); 100 int crypt_list_all_constants(char *names_list, unsigned int *names_list_size); 101 102 int crypt_get_size(const char* namein, unsigned int *sizeout); 103 int crypt_list_all_sizes(char *names_list, unsigned int *names_list_size); 104 105 #ifdef LTM_DESC 106 LTC_DEPRECATED(crypt_mp_init) void init_LTM(void); 107 #endif 108 #ifdef TFM_DESC 109 LTC_DEPRECATED(crypt_mp_init) void init_TFM(void); 110 #endif 111 #ifdef GMP_DESC 112 LTC_DEPRECATED(crypt_mp_init) void init_GMP(void); 113 #endif 114 int crypt_mp_init(const char* mpi); 115 116 #ifdef LTC_ADLER32 117 typedef struct adler32_state_s 118 { 119 unsigned short s[2]; 120 } adler32_state; 121 122 void adler32_init(adler32_state *ctx); 123 void adler32_update(adler32_state *ctx, const unsigned char *input, unsigned long length); 124 void adler32_finish(const adler32_state *ctx, void *hash, unsigned long size); 125 int adler32_test(void); 126 #endif 127 128 #ifdef LTC_CRC32 129 typedef struct crc32_state_s 130 { 131 ulong32 crc; 132 } crc32_state; 133 134 void crc32_init(crc32_state *ctx); 135 void crc32_update(crc32_state *ctx, const unsigned char *input, unsigned long length); 136 void crc32_finish(const crc32_state *ctx, void *hash, unsigned long size); 137 int crc32_test(void); 138 #endif 139 140 141 #ifdef LTC_PADDING 142 143 enum padding_type { 144 LTC_PAD_PKCS7 = 0x0000U, 145 #ifdef LTC_RNG_GET_BYTES 146 LTC_PAD_ISO_10126 = 0x1000U, 147 #endif 148 LTC_PAD_ANSI_X923 = 0x2000U, 149 /* The following padding modes don't contain the padding 150 * length as last byte of the padding. 151 */ 152 LTC_PAD_ONE_AND_ZERO = 0x8000U, 153 LTC_PAD_ZERO = 0x9000U, 154 LTC_PAD_ZERO_ALWAYS = 0xA000U, 155 }; 156 157 int padding_pad(unsigned char *data, unsigned long length, unsigned long* padded_length, unsigned long mode); 158 int padding_depad(const unsigned char *data, unsigned long *length, unsigned long mode); 159 #endif /* LTC_PADDING */ 160 161 #ifdef LTC_SSH 162 typedef enum ssh_data_type_ { 163 LTC_SSHDATA_EOL, 164 LTC_SSHDATA_BYTE, 165 LTC_SSHDATA_BOOLEAN, 166 LTC_SSHDATA_UINT32, 167 LTC_SSHDATA_UINT64, 168 LTC_SSHDATA_STRING, 169 LTC_SSHDATA_MPINT, 170 LTC_SSHDATA_NAMELIST, 171 } ssh_data_type; 172 173 /* VA list handy helpers with tuples of <type, data> */ 174 int ssh_encode_sequence_multi(unsigned char *out, unsigned long *outlen, ...); 175 int ssh_decode_sequence_multi(const unsigned char *in, unsigned long *inlen, ...); 176 #endif /* LTC_SSH */ 177 178 int compare_testvector(const void* is, const unsigned long is_len, const void* should, const unsigned long should_len, const char* what, int which); 179