X-Git-Url: https://git.cryptolib.org/?a=blobdiff_plain;f=prf_tls12%2Fprf_tls12.c;h=d88ab70cf5dd155caa478d3dd9846ea2f8ce8a6d;hb=1cc5630207195b3bc9d967596a9a207c1c0f6464;hp=8b84d5210db7e868ae1f40a14e3a76b2f82ea6b2;hpb=b9d6e1eb867eaa431c4c555a7409342805fa2706;p=arm-crypto-lib.git

diff --git a/prf_tls12/prf_tls12.c b/prf_tls12/prf_tls12.c
index 8b84d52..d88ab70 100644
--- a/prf_tls12/prf_tls12.c
+++ b/prf_tls12/prf_tls12.c
@@ -133,3 +133,21 @@ uint8_t prf_tls12_next(void* dest, prf_tls12_ctx_t* ctx){
 	return 0;
 }
 
+uint8_t prf_tls12_fill(void* dest, uint16_t length_B, prf_tls12_ctx_t* ctx){
+	uint16_t bs = ctx->blocklength_b/8;
+	while(length_B>=bs){
+		if(prf_tls12_next(dest, ctx)){
+			return 1;
+		}
+		length_B -= bs;
+		dest = (uint8_t*)dest + bs;
+	}
+	if(length_B){
+		uint8_t buffer[bs];
+		if(prf_tls12_next(buffer, ctx)){
+			return 2;
+		}
+		memcpy(dest, buffer, length_B);
+	}
+	return 0;
+}