DSA_SIG_NEW(3ossl)

💖 DSA_SIG_NEW 💖

okay bestie, so this is the OpenSSL manual page for DSA_SIG_NEW(3ossl) and it's literally all about DSA signature objects — how to make them, how to yeet them, how to peek inside, and how to fill them up. it's giving "small API, big feelings." let's get into it 🎀

---

✨ NAME ✨

DSA_SIG_get0, DSA_SIG_set0, DSA_SIG_new, DSA_SIG_free — allocate and free DSA signature objects 🦋

---

✨ SYNOPSIS ✨

#include <openssl/dsa.h>

DSA_SIG *DSA_SIG_new(void);
void DSA_SIG_free(DSA_SIG *a);
void DSA_SIG_get0(const DSA_SIG *sig, const BIGNUM **pr, const BIGNUM **ps);
int DSA_SIG_set0(DSA_SIG *sig, BIGNUM *r, BIGNUM *s);

---

✨ DESCRIPTION ✨

DSA_SIG_new() allocates an empty DSA_SIG structure. that's it. that's the whole job. an empty lil container, freshly allocated, waiting for its moment 💅

DSA_SIG_free() frees the DSA_SIG structure and its components. and not in a lazy way either — the values get erased before the memory is handed back to the system, so nothing secret is left lying around. queen behavior fr fr 🔥

and if the argument is NULL? nothing happens. it just politely does nothing. no crash, no drama 🫶

DSA_SIG_get0() returns internal pointers to the r and s values contained in sig. so you're not getting copies, bestie — you're getting pointers into the actual internals. lowkey important, highkey iconic 👑

the r and s values can be set by calling DSA_SIG_set0() and passing the new values for r and s as parameters to the function. but listen, this is the part you cannot skip:

calling this function transfers the memory management of the values to the DSA_SIG object. so the values you passed in should not be freed directly after this function has been called. not "probably shouldn't" — should not. if you free them yourself afterwards you're double-freeing and that's a whole mess you do not want 💀 the DSA_SIG owns them now. periodt.

---

✨ RETURN VALUES ✨

• DSA_SIG_new() — if the allocation fails, it returns NULL and sets an error code that you can grab with ERR_get_error(3). otherwise it returns a pointer to the newly allocated structure ✨
• DSA_SIG_free() — returns no value. it's a void girlie, she just does her thing and leaves 🌸
• DSA_SIG_set0() — returns 1 on success or 0 on failure. classic binary outcome, no in-between, very much giving vibe check 🎀

---

✨ SEE ALSO ✨

• EVP_PKEY_new(3)
• EVP_PKEY_free(3)
• EVP_PKEY_get_bn_param(3)
• ERR_get_error(3)

---

✨ COPYRIGHT ✨

Copyright 2000-2024 The OpenSSL Project Authors. All Rights Reserved. 💜

Licensed under the Apache License 2.0 (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>.

---

okay that's the whole page bestie, you ate it, you understood it, you're basically a DSA signature object whisperer now 🌈⭐ and for the cute sign-off: this was OpenSSL 3.5.9, dated 2026-09-29, DSA_SIG_NEW(3ossl). mwah 💋 go manage your memory responsibly 🧚💖