Add DRBG random method

[openssl.git] / include / internal / rand.h

diff --git a/include/internal/rand.h b/include/internal/rand.h
new file mode 100644 (file)
index 0000000..95ad712
--- /dev/null
+++ b/include/internal/rand.h
@@ -0,0 +1,50 @@
+/*
+ * Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
+ *
+ * Licensed under the OpenSSL license (the "License").  You may not use
+ * this file except in compliance with the License.  You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
+ */
+
+#ifndef HEADER_DRBG_RAND_H
+# define HEADER_DRBG_RAND_H
+
+/* Flag for CTR mode only: use derivation function ctr_df */
+#define RAND_DRBG_FLAG_CTR_USE_DF            0x2
+
+const RAND_METHOD *RAND_drbg(void);
+
+int RAND_DRBG_set(DRBG_CTX *ctx, int type, unsigned int flags);
+DRBG_CTX *RAND_DRBG_new(int type, unsigned int flags, DRBG_CTX *parent);
+int RAND_DRBG_instantiate(DRBG_CTX *dctx,
+                          const unsigned char *pers, size_t perslen);
+int RAND_DRBG_uninstantiate(DRBG_CTX *dctx);
+int RAND_DRBG_reseed(DRBG_CTX *dctx, const unsigned char *adin, size_t adinlen);
+int RAND_DRBG_generate(DRBG_CTX *dctx, unsigned char *out, size_t outlen,
+                       int prediction_resistance,
+                       const unsigned char *adin, size_t adinlen);
+void RAND_DRBG_free(DRBG_CTX *dctx);
+
+int RAND_DRBG_set_callbacks(DRBG_CTX *dctx,
+    size_t (*get_entropy)(DRBG_CTX *ctx, unsigned char **pout,
+                          int entropy, size_t min_len, size_t max_len),
+    void (*cleanup_entropy)(DRBG_CTX *ctx, unsigned char *out, size_t olen),
+    size_t (*get_nonce)(DRBG_CTX *ctx, unsigned char **pout,
+                        int entropy, size_t min_len, size_t max_len),
+    void (*cleanup_nonce)(DRBG_CTX *ctx, unsigned char *out, size_t olen)
+    );
+
+void RAND_DRBG_set_reseed_interval(DRBG_CTX *dctx, int interval);
+
+#define RAND_DRBG_get_ex_new_index(l, p, newf, dupf, freef) \
+    CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DRBG, l, p, newf, dupf, freef)
+int RAND_DRBG_set_ex_data(DRBG_CTX *dctx, int idx, void *arg);
+void *RAND_DRBG_get_ex_data(const DRBG_CTX *dctx, int idx);
+
+DRBG_CTX *RAND_DRBG_get_default(void);
+
+
+#endif
+
+