From 7bb6e38a99603993c366ada2509c561eada32494 Mon Sep 17 00:00:00 2001
From: ENGO150 <v.smejkal06@gmail.com>
Date: Sat, 1 Feb 2025 12:55:39 +0100
Subject: [PATCH] created why2_chat_ecc_serialize_public_key fn

---
 include/chat/crypto.h |  2 ++
 src/chat/crypto.c     | 31 +++++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+)

diff --git a/include/chat/crypto.h b/include/chat/crypto.h
index affdda5..0230b39 100644
--- a/include/chat/crypto.h
+++ b/include/chat/crypto.h
@@ -43,6 +43,8 @@ void why2_chat_deallocate_keys(void); //DEALLOCATE :) (NO SLUR HERE)
 char *why2_chat_ecc_sign(char *message); //SIGN message WITH ECC KEY
 why2_bool why2_chat_ecc_verify_signature(char *message, char *signature, EVP_PKEY *key);
 
+char *why2_chat_ecc_serialize_public_key(); //GET PUBLIC ECC KEY IN BASE64
+
 char *why2_sha256(char *input); //HASH input USING SHA256 AND RETURN IN STRING
 
 #ifdef __cplusplus
diff --git a/src/chat/crypto.c b/src/chat/crypto.c
index b2a1b49..802cc68 100644
--- a/src/chat/crypto.c
+++ b/src/chat/crypto.c
@@ -189,6 +189,37 @@ why2_bool why2_chat_ecc_verify_signature(char *message, char *signature, EVP_PKE
     return returning;
 }
 
+//TODO: Remove PEM
+char *why2_chat_ecc_serialize_public_key()
+{
+    //VARIABLES
+    BIO *bio = BIO_new(BIO_s_mem());
+    char *data;
+    size_t length;
+    char *pubkey;
+    char *base64_encoded;
+
+    //SEPARATE PUBKEY
+    PEM_write_bio_PUBKEY(bio, keypair);
+
+    //ALLOCATE
+    length = BIO_get_mem_data(bio, &data);
+    pubkey = why2_malloc(length + 1);
+
+    //COPY
+    memcpy(pubkey, data, length);
+    pubkey[length] = '\0';
+
+    //ENCODE
+    base64_encoded = base64_encode(pubkey, length);
+
+    //DEALLOCATION
+    BIO_free(bio);
+    why2_deallocate(pubkey);
+
+    return base64_encoded;
+}
+
 void why2_chat_deallocate_keys(void)
 {
     //DEALLOCATE THE pkey