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hkdf.h
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1 
9 /*
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52 #ifndef MBEDTLS_HKDF_H
53 #define MBEDTLS_HKDF_H
54 
55 #if !defined(MBEDTLS_CONFIG_FILE)
56 #include "config.h"
57 #else
58 #include MBEDTLS_CONFIG_FILE
59 #endif
60 
61 #include "md.h"
62 
67 #define MBEDTLS_ERR_HKDF_BAD_INPUT_DATA -0x5F80
68 /* \} name */
69 
70 #ifdef __cplusplus
71 extern "C" {
72 #endif
73 
98 int mbedtls_hkdf( const mbedtls_md_info_t *md, const unsigned char *salt,
99  size_t salt_len, const unsigned char *ikm, size_t ikm_len,
100  const unsigned char *info, size_t info_len,
101  unsigned char *okm, size_t okm_len );
102 
128  const unsigned char *salt, size_t salt_len,
129  const unsigned char *ikm, size_t ikm_len,
130  unsigned char *prk );
131 
158 int mbedtls_hkdf_expand( const mbedtls_md_info_t *md, const unsigned char *prk,
159  size_t prk_len, const unsigned char *info,
160  size_t info_len, unsigned char *okm, size_t okm_len );
161 
162 #ifdef __cplusplus
163 }
164 #endif
165 
166 #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).
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.
#define md
Definition: compat-1.3.h:2013