38c146c477
- vendor orlp/ed25519 (lib/ed25519, MIT — the exact lib MeshCore uses) for Curve25519 ECDH key exchange; switch identity/advert signing to it (same seed -> same pubkey, so peers still recognise us; sigs are byte-identical) - store pubkeys from heard MeshCore adverts (contacts table) so a DM's 1-byte src_hash can be resolved to a full sender key - decode PAYLOAD_TYPE_TXT_MSG: ECDH shared secret, HMAC-SHA256 MAC check, AES-128-ECB decrypt, parse timestamp+text, drive the message modal - verified end-to-end: real MeshCore node -> "hello from HP Pro Desk" decoded Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
22 lines
489 B
C
22 lines
489 B
C
#ifndef SHA512_H
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#define SHA512_H
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#include <stddef.h>
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#include "fixedint.h"
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/* state */
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typedef struct sha512_context_ {
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uint64_t length, state[8];
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size_t curlen;
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unsigned char buf[128];
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} sha512_context;
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int sha512_init(sha512_context * md);
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int sha512_final(sha512_context * md, unsigned char *out);
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int sha512_update(sha512_context * md, const unsigned char *in, size_t inlen);
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int sha512(const unsigned char *message, size_t message_len, unsigned char *out);
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#endif
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