SPAKE_GROUP_P521
SPAKE_GROUP_P521, "P-521", 66, 67, P521_M, P521_N, 64
case SPAKE_GROUP_P521:
{ ENCTYPE_AES256_CTS_HMAC_SHA1_96, SPAKE_GROUP_P521,
{ ENCTYPE_AES256_CTS_HMAC_SHA1_96, SPAKE_GROUP_P521,