wuggy/Dactyloidae
wuggy/Dactyloidae
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Dactyloidae iOS initial commit

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wuggy 2026-06-26 21:04:09 -07:00
commit 7154a0497e
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88
mobile/ios/ThirdParty/ecec/tool/decrypt.c vendored Normal file
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ece.h>
int
main(int argc, char** argv) {
if (argc < 4) {
fprintf(stderr, "Usage: %s <auth-secret> <receiver-private> <message>",
argv[0]);
return 2;
}
int err = 0;
uint8_t* payload = NULL;
uint8_t* plaintext = NULL;
uint8_t authSecret[ECE_WEBPUSH_AUTH_SECRET_LENGTH];
if (!ece_base64url_decode(argv[1], strlen(argv[1]),
ECE_BASE64URL_REJECT_PADDING, authSecret,
ECE_WEBPUSH_AUTH_SECRET_LENGTH)) {
fprintf(stderr, "Error: Failed to Base64url-decode auth secret\n");
goto error;
}
uint8_t rawRecvPrivKey[ECE_WEBPUSH_PRIVATE_KEY_LENGTH];
if (!ece_base64url_decode(argv[2], strlen(argv[2]),
ECE_BASE64URL_REJECT_PADDING, rawRecvPrivKey,
ECE_WEBPUSH_PRIVATE_KEY_LENGTH)) {
fprintf(stderr, "Error: Failed to Base64url-decode private key\n");
goto error;
}
size_t payloadBase64Len = strlen(argv[3]);
size_t payloadLen = ece_base64url_decode(
argv[3], payloadBase64Len, ECE_BASE64URL_REJECT_PADDING, NULL, 0);
if (!payloadLen) {
fprintf(stderr, "Error: Empty or invalid Base64url-encoded message\n");
goto error;
}
payload = calloc(payloadLen, sizeof(uint8_t));
if (!payload) {
fprintf(
stderr,
"Error: Failed to allocate %zu bytes for Base64url-decoded message\n",
payloadLen);
goto error;
}
payloadLen =
ece_base64url_decode(argv[3], payloadBase64Len,
ECE_BASE64URL_REJECT_PADDING, payload, payloadLen);
if (!payloadLen) {
fprintf(stderr, "Error: Failed to Base64url-decode message\n");
goto error;
}
size_t plaintextLen = ece_aes128gcm_plaintext_max_length(payload, payloadLen);
if (!plaintextLen) {
fprintf(stderr, "Error: Encrypted message too short\n");
goto error;
}
plaintextLen++;
plaintext = calloc(plaintextLen, sizeof(uint8_t));
if (!plaintext) {
fprintf(stderr,
"Error: Failed to allocate %zu bytes for decrypted message\n",
plaintextLen);
goto error;
}
err = ece_webpush_aes128gcm_decrypt(
rawRecvPrivKey, ECE_WEBPUSH_PRIVATE_KEY_LENGTH, authSecret,
ECE_WEBPUSH_AUTH_SECRET_LENGTH, payload, payloadLen, plaintext,
&plaintextLen);
if (err) {
fprintf(stderr, "Error: Failed to decrypt message: %d\n", err);
goto error;
}
plaintext[plaintextLen] = '\0';
printf("Decrypted message: %s\n", plaintext);
goto end;
error:
err = 1;
end:
free(payload);
free(plaintext);
return err;
}