SparkFun_ATECCX08a_Arduino_Library
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Problem with the sign verification example number 3
Hello, I am using an ESP32 WROOM-32 NodeMCU v2 with the cryptographic chip ATECC508A and when trying to verify the sign from the second example it always returns a verification failure. I followed the steps carefully so I do not know what is wrong here. Below are the outputs given by the second and third example.
Example 2 output
This device's Public Key:
uint8_t publicKey[64] = { 0xB2, 0xAA, 0xE7, 0x84, 0x1D, 0x43, 0x5C, 0xE6, 0x49, 0xFD, 0x26, 0x3B, 0x8D, 0xC2, 0xF8, 0x2A, 0x20, 0x49, 0x9A, 0xFC, 0xAE, 0xFE, 0x25, 0x1C, 0x6A, 0x90, 0x26, 0xC6, 0x40, 0xC3, 0x4C, 0x5F, 0x3A, 0x98, 0xAA, 0xA4, 0x2B, 0xFE, 0x46, 0x40, 0x99, 0xB4, 0xC5, 0x26, 0x81, 0x94, 0x6B, 0x18, 0xDF, 0x3D, 0xE6, 0x18, 0x6D, 0x4C, 0x61, 0xE0, 0x1F, 0xD2, 0x4F, 0x73, 0x80, 0xB2, 0x2E, 0x68 };
uint8_t message[32] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F };
uint8_t signature[64] = { 0x63, 0x5D, 0xFD, 0x43, 0x0C, 0x05, 0xE3, 0x19, 0xE2, 0x1C, 0x1E, 0xC8, 0x9E, 0xD2, 0x49, 0xCC, 0x91, 0x54, 0x55, 0xB0, 0xC2, 0x4C, 0xDE, 0x74, 0xE9, 0x75, 0x36, 0xE3, 0xE6, 0x19, 0xB6, 0x89, 0x9D, 0xBD, 0x4D, 0x84, 0x3F, 0xDB, 0x2B, 0xE0, 0xA6, 0xA4, 0x30, 0xAB, 0x24, 0x03, 0xE3, 0x84, 0xB3, 0xCD, 0xDD, 0xD3, 0x1D, 0x03, 0x29, 0x0C, 0x4B, 0xF0, 0x4C, 0xE7, 0x48, 0x17, 0x2B, 0x40 };
Example 3 output
Successful wakeUp(). I2C connections are good.
Serial Number: 0123C5C7349171DDEE Rev Number: 00005000 Config Zone: Locked Data/OTP Zone: Locked Data Slot 0: Locked
uint8_t publicKeyExternal[64] = { 0xB2, 0xAA, 0xE7, 0x84, 0x1D, 0x43, 0x5C, 0xE6, 0x49, 0xFD, 0x26, 0x3B, 0x8D, 0xC2, 0xF8, 0x2A, 0x20, 0x49, 0x9A, 0xFC, 0xAE, 0xFE, 0x25, 0x1C, 0x6A, 0x90, 0x26, 0xC6, 0x40, 0xC3, 0x4C, 0x5F, 0x3A, 0x98, 0xAA, 0xA4, 0x2B, 0xFE, 0x46, 0x40, 0x99, 0xB4, 0xC5, 0x26, 0x81, 0x94, 0x6B, 0x18, 0xDF, 0x3D, 0xE6, 0x18, 0x6D, 0x4C, 0x61, 0xE0, 0x1F, 0xD2, 0x4F, 0x73, 0x80, 0xB2, 0x2E, 0x68 };
uint8_t message[32] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F };
uint8_t signature[64] = { 0x63, 0x5D, 0xFD, 0x43, 0x0C, 0x05, 0xE3, 0x19, 0xE2, 0x1C, 0x1E, 0xC8, 0x9E, 0xD2, 0x49, 0xCC, 0x91, 0x54, 0x55, 0xB0, 0xC2, 0x4C, 0xDE, 0x74, 0xE9, 0x75, 0x36, 0xE3, 0xE6, 0x19, 0xB6, 0x89, 0x9D, 0xBD, 0x4D, 0x84, 0x3F, 0xDB, 0x2B, 0xE0, 0xA6, 0xA4, 0x30, 0xAB, 0x24, 0x03, 0xE3, 0x84, 0xB3, 0xCD, 0xDD, 0xD3, 0x1D, 0x03, 0x29, 0x0C, 0x4B, 0xF0, 0x4C, 0xE7, 0x48, 0x17, 0x2B, 0x40 };
Verification failure.
Thank you in advance
