mbed TLS v2.16.7
hkdf.h
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54 #ifndef MBEDTLS_HKDF_H
55 #define MBEDTLS_HKDF_H
56 
57 #if !defined(MBEDTLS_CONFIG_FILE)
58 #include "config.h"
59 #else
60 #include MBEDTLS_CONFIG_FILE
61 #endif
62 
63 #include "md.h"
64 
69 #define MBEDTLS_ERR_HKDF_BAD_INPUT_DATA -0x5F80
70 /* \} name */
71 
72 #ifdef __cplusplus
73 extern "C" {
74 #endif
75 
100 int mbedtls_hkdf( const mbedtls_md_info_t *md, const unsigned char *salt,
101  size_t salt_len, const unsigned char *ikm, size_t ikm_len,
102  const unsigned char *info, size_t info_len,
103  unsigned char *okm, size_t okm_len );
104 
130  const unsigned char *salt, size_t salt_len,
131  const unsigned char *ikm, size_t ikm_len,
132  unsigned char *prk );
133 
160 int mbedtls_hkdf_expand( const mbedtls_md_info_t *md, const unsigned char *prk,
161  size_t prk_len, const unsigned char *info,
162  size_t info_len, unsigned char *okm, size_t okm_len );
163 
164 #ifdef __cplusplus
165 }
166 #endif
167 
168 #endif /* hkdf.h */
int mbedtls_hkdf(const mbedtls_md_info_t *md, const unsigned char *salt, size_t salt_len, const unsigned char *ikm, size_t ikm_len, const unsigned char *info, size_t info_len, unsigned char *okm, size_t okm_len)
This is the HMAC-based Extract-and-Expand Key Derivation Function (HKDF).
Configuration options (set of defines)
int mbedtls_hkdf_expand(const mbedtls_md_info_t *md, const unsigned char *prk, size_t prk_len, const unsigned char *info, size_t info_len, unsigned char *okm, size_t okm_len)
Expand the supplied prk into several additional pseudorandom keys, which is the output of the HKDF...
int mbedtls_hkdf_extract(const mbedtls_md_info_t *md, const unsigned char *salt, size_t salt_len, const unsigned char *ikm, size_t ikm_len, unsigned char *prk)
Take the input keying material ikm and extract from it a fixed-length pseudorandom key prk...
This file contains the generic message-digest wrapper.
struct mbedtls_md_info_t mbedtls_md_info_t
Definition: md.h:107
#define md
Definition: compat-1.3.h:2015