Symbol: HKDF
crypto/libressl/crypto/kdf/hkdf_evp.c
237
return HKDF(key, *keylen, kctx->md, kctx->key, kctx->key_len,
crypto/libressl/include/openssl/hkdf.h
36
int HKDF(uint8_t *out_key, size_t out_len, const struct env_md_st *digest,