nx_ecdsa_p384_test.nx

nx_ecdsa_p384_test.nx -- KAT for ECDSA-P384 verify against the RFC 6979 §A.2.6 vector (P-384 with SHA-256 over "sample"). Inputs loaded via u384_load_be from BIG-ENDIAN byte tables -- mirrors the pattern used by nx_ecdsa_p256_test, eliminates the hand-transcribed LE-limb error class. A prior version of this file had a typo at sig_r[1] (0xFA2B3C36 vs correct 0x2FA2B3C3) because manually splitting a BE hex string into LE 32-bit limbs is error-prone. See [[feedback-canonical-constants-kat-against- reference-not-hand-converted]] -- same lesson: don't hand- convert representation; load_be takes the bytes as-is. expect_exit: 0 license_tier: ORIGINAL