Update SM2 to use ASN.1 encoding for ciphertexts

There are in fact 3 different variations of SM2 standard, first
C1||C2||C3, then C1||C3||C2, then (most recently) an ASN.1 encoding.

This makes us compatible with GmSSL

This work was sponsored by Ribose Inc (@riboseinc).

1 files changed, 2 insertions, 0 deletions

diff --git a/src/tests/test_sm2.cpp b/src/tests/test_sm2.cpp
index 0497ccedd..0816a5f76 100644
--- a/src/tests/test_sm2.cpp
+++ b/src/tests/test_sm2.cpp
@@ -78,6 +78,8 @@ class SM2_Encryption_KAT_Tests : public PK_Encryption_Decryption_Test
          return get_opt_str(vars, "Hash", "SM3");
          }
 
+      bool clear_between_callbacks() const override { return false; }
+
       Botan::RandomNumberGenerator* test_rng(const std::vector<uint8_t>& nonce) const override
          {
          return new Fixed_Output_Position_RNG(nonce, 1);