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nx_aes128_ctr_wasm.nx

buildroot/runtime/nx_aes128_ctr_wasm.nx

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nx_aes128_ctr_wasm.nx -- AES-128-CTR (NIST SP 800-38A §6.5). Wraps inlined AES-128 ECB with counter-mode stream cipher logic. Verified vs NIST SP 800-38A §F.5.1 test vector. (Original ECB header below is the inlined cipher core.) nx_aes128_wasm.nx -- AES-128 ECB (FIPS 197) self-contained for WAT target. Rijndael-128 with 128-bit key, 16-byte block, 10 rounds. ECB mode only -- caller composes CTR/GCM/CBC on top. Implementation: byte-oriented SBox/InvSBox + ShiftRows + MixColumns done as straightforward 4x4 byte ops. No T-tables (slower but smaller code, simpler, side-channel-friendly). API: nx_aes128_encrypt(key_ptr, in_block, scratch_ptr, out_block) -> i64 key_ptr -- 16 bytes (128-bit key) in_block -- 16 bytes plaintext scratch_ptr -- >= 256 bytes (key schedule = 11 round keys = 176 bytes) out_block -- 16 bytes ciphertext nx_aes128_decrypt(key_ptr, in_block, scratch_ptr, out_block) -> i64 symmetric inverse (uses InvSBox + InvShiftRows + InvMixColumns) Verified against FIPS 197 Appendix C.1 (single-block KAT). license_tier: INDEPENDENT_REDERIVE genealogy_id: international-research-sources/nist/fips_197 lineage_id: nishi_aes128_wasm_q11

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structs

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consts

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functions

32	func _aes_sbox(b: i64) -> i64 called by 2: _aes128_key_expand _aes_sub_bytes
101	func _aes_rcon(i: i64) -> i64 called by 1: _aes128_key_expand
110	func _xtime(a: i64) -> i64 called by 1: _aes_mix_columns
118	func _aes128_key_expand(key: u8, rk: u8) -> i64 called by 1: _aes128_encrypt_block calls 2: _aes_sbox _aes_rcon
150	func _aes_add_round_key(state: u8, rk: u8, round: i64) -> i64 called by 1: _aes128_encrypt_block
157	func _aes_sub_bytes(state: *u8) -> i64 called by 1: _aes128_encrypt_block calls 1: _aes_sbox
169	func _aes_shift_rows(state: *u8) -> i64 called by 1: _aes128_encrypt_block
198	func _aes_mix_columns(state: *u8) -> i64 called by 1: _aes128_encrypt_block calls 1: _xtime
222	func _aes128_encrypt_block(key_ptr: u8, in_block: u8, called by 1: nx_aes128_ctr_xor calls 5: _aes128_key_expand _aes_add_round_key _aes_sub_bytes _aes_shift_rows _aes_mix_columns
255	func _aes_ctr_inc(ctr: *u8) -> i64 called by 1: nx_aes128_ctr_xor
274	func nx_aes128_ctr_xor(key_ptr: u8, iv16: u8, calls 2: _aes128_encrypt_block _aes_ctr_inc