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/*-------------------------------------------------------------------------
*
* scram.h
* Interface to libpq/scram.c
*
* Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* src/include/libpq/scram.h
*
*-------------------------------------------------------------------------
*/
#ifndef PG_SCRAM_H
#define PG_SCRAM_H
/* Name of SCRAM mechanisms per IANA */
#define SCRAM_SHA256_NAME "SCRAM-SHA-256"
#define SCRAM_SHA256_PLUS_NAME "SCRAM-SHA-256-PLUS" /* with channel binding */
/* Channel binding types */
#define SCRAM_CHANNEL_BINDING_TLS_UNIQUE "tls-unique"
/* Status codes for message exchange */
#define SASL_EXCHANGE_CONTINUE 0
#define SASL_EXCHANGE_SUCCESS 1
#define SASL_EXCHANGE_FAILURE 2
/* Routines dedicated to authentication */
extern void *pg_be_scram_init(const char *username, const char *shadow_pass,
bool ssl_in_use, const char *tls_finished_message,
size_t tls_finished_len);
extern int pg_be_scram_exchange(void *opaq, char *input, int inputlen,
char **output, int *outputlen, char **logdetail);
/* Routines to handle and check SCRAM-SHA-256 verifier */
extern char *pg_be_scram_build_verifier(const char *password);
extern bool scram_verify_plain_password(const char *username,
const char *password, const char *verifier);
#endif /* PG_SCRAM_H */
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