void md2_final(MD2_CTX *ctx, BYTE hash[])
{
int to_pad;
to_pad = MD2_BLOCK_SIZE - ctx->len;
while (ctx->len < MD2_BLOCK_SIZE)
ctx->data[ctx->len++] = to_pad;
md2_transform(ctx, ctx->data);
md2_transform(ctx, ctx->checksum);
memcpy(hash, ctx->state, MD2_BLOCK_SIZE);
}
void
md2_digest(struct md2_ctx *ctx,
unsigned length,
uint8_t *digest)
{
unsigned left;
assert(length <= MD2_DIGEST_SIZE);
left = MD2_DATA_SIZE - ctx->index;
memset(ctx->block + ctx->index, left, left);
md2_transform(ctx, ctx->block);
md2_transform(ctx, ctx->C);
memcpy(digest, ctx->X, length);
md2_init(ctx);
}
void md2_update(MD2_CTX *ctx, const BYTE data[], size_t len)
{
size_t i;
for (i = 0; i < len; ++i) {
ctx->data[ctx->len] = data[i];
ctx->len++;
if (ctx->len == MD2_BLOCK_SIZE) {
md2_transform(ctx, ctx->data);
ctx->len = 0;
}
}
}
