myna-card 1.0.0

//! CA public keys for the 券面 applications' card-verifiable certificates.
//!
//! A card-verifiable certificate names its signing key by 証明者鍵ID and does not carry it, so a
//! verifier has to hold the CA keys itself. These are the ones in circulation.
//!
//! To use a key you obtained yourself instead, pass it to
//! [`CardVerifiableCertificate::verify_with`](crate::data::CardVerifiableCertificate::verify_with).
//!
//! # Coverage
//!
//! Three production keys — `"5000020"`, `"5000023"` and `"5000033"` — and the three matching
//! keys of the test hierarchy JPKI test cards are issued under. Anything else answers
//! [`Error::UnknownCertificateAuthority`](crate::Error::UnknownCertificateAuthority) — nothing was
//! checked — rather than failing the signature.
//!
//! Every 証明者鍵ID seen on any card examined resolves; the intermediates below them need no
//! entry, since each one's key travels inside the certificate above it.

use crate::data::{KeyId, RsaPublicKey};

/// A CA public key, with the 証明者鍵ID that names it.
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub struct CaKey {
    /// 証明者鍵ID, 16 bytes — what a certificate's `issuer_key_id` is matched against.
    pub key_id: &'static [u8; 16],
    /// Modulus, big-endian.
    pub modulus: &'static [u8],
    /// Public exponent, big-endian. 65537 for every key here.
    pub exponent: &'static [u8],
}

impl CaKey {
    /// The key in the form the rest of this crate uses.
    pub fn to_public_key(&self) -> RsaPublicKey {
        RsaPublicKey {
            exponent: self.exponent.to_vec(),
            modulus: self.modulus.to_vec(),
        }
    }

    /// The printable part of the 証明者鍵ID, for messages.
    pub fn name(&self) -> &str {
        std::str::from_utf8(&self.key_id[..7]).unwrap_or("?")
    }
}

/// The public exponent every one of these keys uses.
const E65537: &[u8] = &[0x01, 0x00, 0x01];

/// Modulus of the CA key for 証明者鍵ID `"5000020"` — the MF level chain.
const MODULUS_5000020: &[u8; 256] = &[
    0xB6, 0x2D, 0x08, 0x11, 0x45, 0xD3, 0x4A, 0xCE, 0xB0, 0x22, 0xBC, 0x2F, 0x0A, 0x08, 0xD8, 0xB3,
    0x90, 0xE4, 0x2F, 0xFE, 0xEE, 0xC9, 0x34, 0x72, 0xF6, 0x75, 0xEC, 0x33, 0x50, 0x7B, 0xBC, 0xE9,
    0x82, 0xC2, 0x2F, 0x33, 0xB7, 0x30, 0x4C, 0xF1, 0x76, 0x39, 0xCE, 0x75, 0xA1, 0xD0, 0xFD, 0x1E,
    0x75, 0xFF, 0xAD, 0x86, 0xB0, 0xD7, 0x2C, 0xCC, 0xF0, 0xD0, 0xB0, 0x51, 0x36, 0xDD, 0xB7, 0x26,
    0x14, 0x00, 0xC0, 0x16, 0x0C, 0x71, 0x38, 0x72, 0xE1, 0xE8, 0x3C, 0x48, 0xA2, 0xA0, 0x08, 0x18,
    0x14, 0x7F, 0xEF, 0xBF, 0x0B, 0x09, 0xF6, 0x43, 0xEE, 0x4B, 0x32, 0x84, 0x19, 0xE8, 0x76, 0x37,
    0x67, 0xAD, 0xBE, 0xAE, 0xBA, 0x88, 0xD4, 0x9C, 0x3B, 0x44, 0xA5, 0xB8, 0xF8, 0xAD, 0x79, 0x4F,
    0xCF, 0x64, 0xA4, 0x16, 0x1A, 0x9F, 0xE8, 0xB9, 0x76, 0x60, 0xFC, 0xA4, 0x69, 0x41, 0x14, 0x59,
    0x4D, 0x4B, 0x84, 0x98, 0xFE, 0x1E, 0x52, 0x50, 0x20, 0x86, 0xAB, 0xC1, 0xB0, 0xED, 0xA0, 0x04,
    0xD3, 0x9D, 0x95, 0x19, 0x3B, 0x40, 0x31, 0xAB, 0x0C, 0x51, 0x60, 0x08, 0xBB, 0xAF, 0xFC, 0x49,
    0xAC, 0x6A, 0x2E, 0xBE, 0x54, 0x4E, 0xF4, 0x9E, 0xA3, 0xB7, 0x90, 0xCD, 0x13, 0xF1, 0x33, 0x89,
    0x6D, 0xF8, 0xDA, 0x63, 0xE1, 0x5C, 0xE8, 0xAC, 0x0D, 0xC2, 0x76, 0xF7, 0x6F, 0x08, 0x0B, 0x72,
    0x3E, 0x66, 0x48, 0xF1, 0x0A, 0x6F, 0xB7, 0xB0, 0x8E, 0x5C, 0x69, 0xDC, 0xDF, 0xAD, 0xD5, 0x2F,
    0x7B, 0x5B, 0x6D, 0x17, 0x40, 0xCF, 0x8E, 0x35, 0x6B, 0xC6, 0x85, 0xB3, 0x1D, 0x7C, 0x45, 0x56,
    0x80, 0xCD, 0x95, 0xD3, 0xB4, 0xB2, 0x0E, 0xA8, 0x09, 0x4F, 0x00, 0x66, 0x0A, 0xE7, 0x74, 0xEE,
    0xBA, 0xB2, 0x87, 0x54, 0x87, 0xA1, 0x21, 0x0C, 0xA8, 0x72, 0x21, 0xA0, 0xB6, 0x3A, 0x3E, 0x83,
];

/// Modulus of the CA key for 証明者鍵ID `"5000023"` — the 券面事項確認AP.
const MODULUS_5000023: &[u8; 256] = &[
    0xB2, 0xF7, 0x40, 0xF0, 0xAD, 0x86, 0xD1, 0x7C, 0xF3, 0xF5, 0x37, 0xD2, 0x3B, 0x4B, 0x3C, 0x65,
    0xA3, 0xCB, 0x58, 0x47, 0x4D, 0x85, 0x7F, 0x55, 0xD0, 0xB9, 0xBC, 0x04, 0x11, 0xB1, 0xCB, 0x08,
    0x49, 0x06, 0x8D, 0xE3, 0x32, 0xA5, 0x0D, 0x63, 0xB3, 0xE6, 0x92, 0x1C, 0x9C, 0xCB, 0xE6, 0x15,
    0x64, 0x96, 0xEF, 0xB0, 0x4B, 0xE8, 0xFF, 0xCC, 0x74, 0xFD, 0xE9, 0xA2, 0x28, 0xA3, 0x6A, 0xD7,
    0xED, 0xCE, 0x97, 0x93, 0x20, 0x4E, 0x35, 0x97, 0x3D, 0xC9, 0x11, 0x10, 0x83, 0x65, 0x00, 0x2C,
    0x40, 0x16, 0x9E, 0x0B, 0x60, 0x01, 0x8D, 0xFB, 0x99, 0xE1, 0xE2, 0x31, 0x0D, 0x9A, 0x11, 0x0F,
    0xF0, 0xFC, 0x26, 0x9F, 0x1F, 0x22, 0x0C, 0x63, 0xB8, 0xA1, 0x51, 0x0D, 0xE5, 0xA6, 0x89, 0x82,
    0x20, 0xC7, 0x89, 0x08, 0xFC, 0x28, 0x0D, 0x8A, 0xA9, 0x5D, 0x5D, 0x11, 0x3B, 0x7C, 0xF0, 0x07,
    0x00, 0xF3, 0xFF, 0x5A, 0xD8, 0xB3, 0xD6, 0xAD, 0x2E, 0xB5, 0x3C, 0x7D, 0x56, 0x34, 0x98, 0xB4,
    0xA9, 0x38, 0xDE, 0xFF, 0xC9, 0xBD, 0xA3, 0x2B, 0xF4, 0x14, 0x6C, 0x1B, 0x07, 0xEF, 0x87, 0x0D,
    0x99, 0xEB, 0x35, 0xDE, 0x5D, 0x70, 0xAC, 0x18, 0x71, 0x58, 0x74, 0x27, 0x7A, 0x13, 0x15, 0x1D,
    0x21, 0x7D, 0x04, 0xD4, 0x2E, 0x97, 0x92, 0x39, 0x23, 0xA4, 0x0F, 0xBC, 0x7D, 0x06, 0xFA, 0xA8,
    0x33, 0x8C, 0xCB, 0xE8, 0x76, 0x62, 0x0F, 0x9B, 0x8E, 0xF4, 0x47, 0x1C, 0xD4, 0xB9, 0xE2, 0x9D,
    0x4E, 0xA6, 0x21, 0xE0, 0xFB, 0x8F, 0x1D, 0xC0, 0x4B, 0x48, 0x72, 0x10, 0x09, 0x7D, 0xBA, 0xAF,
    0x3D, 0x8E, 0x05, 0x50, 0xC7, 0x6A, 0x5B, 0x97, 0xCF, 0x20, 0x2F, 0xA4, 0x7C, 0x7A, 0x26, 0x22,
    0xF1, 0xC0, 0x84, 0xE6, 0x5C, 0x13, 0xD1, 0x3B, 0x8E, 0x7A, 0xB2, 0x26, 0xF5, 0xF5, 0x1F, 0x87,
];

/// Modulus of the CA key for 証明者鍵ID `"5000033"` — the 券面入力補助AP.
const MODULUS_5000033: &[u8; 256] = &[
    0xD2, 0x46, 0x15, 0xF6, 0x35, 0x25, 0xE7, 0x40, 0xC8, 0x7E, 0x83, 0xED, 0x64, 0x78, 0x7E, 0x76,
    0xD1, 0x0A, 0x1F, 0x86, 0x52, 0xEB, 0xE1, 0xEA, 0x28, 0x93, 0x4D, 0x35, 0xCE, 0x3B, 0xF0, 0x77,
    0x16, 0xF5, 0xB7, 0x9E, 0x2B, 0xCB, 0x2A, 0xE2, 0xB9, 0x1B, 0x4F, 0x4C, 0x9F, 0xFB, 0x60, 0x24,
    0x97, 0xF5, 0x96, 0xD6, 0x59, 0xAF, 0x9D, 0x0A, 0x14, 0xB4, 0x5C, 0xDD, 0x73, 0x8E, 0xF5, 0x62,
    0x49, 0x34, 0x9B, 0x8C, 0xC7, 0xDB, 0x32, 0xF2, 0xD4, 0x33, 0xBD, 0x39, 0xBC, 0xC4, 0x4F, 0x50,
    0x3E, 0x88, 0x1D, 0x56, 0xC1, 0x49, 0xEC, 0xD5, 0x15, 0x5C, 0x1C, 0xE7, 0x46, 0x1F, 0xC3, 0xAC,
    0x4F, 0x55, 0xD0, 0xA3, 0x9C, 0xCA, 0xAA, 0xDF, 0xAE, 0x5B, 0x8A, 0xFA, 0x11, 0xCC, 0xF9, 0x1B,
    0xED, 0xC7, 0x74, 0x02, 0x3D, 0x11, 0xCA, 0x6E, 0xBA, 0x99, 0x00, 0x4F, 0x81, 0xC5, 0x41, 0xA7,
    0xD6, 0x7D, 0xDE, 0xD8, 0xC7, 0x24, 0xD6, 0xE2, 0x0B, 0x10, 0xA3, 0xDE, 0xAA, 0xE8, 0xC4, 0x3C,
    0x13, 0x7C, 0xCD, 0x71, 0xB2, 0x63, 0x74, 0x0E, 0x89, 0x79, 0x75, 0x2D, 0xE4, 0xD5, 0x67, 0x63,
    0x29, 0xCA, 0xBC, 0xBD, 0x7F, 0x3A, 0x77, 0xFC, 0x48, 0xA6, 0xF8, 0xE6, 0x1D, 0x39, 0x9B, 0x4A,
    0xC6, 0x66, 0x84, 0xA9, 0xFD, 0xFC, 0x99, 0xEC, 0xEF, 0x90, 0x0D, 0xD6, 0xFF, 0x7F, 0x0F, 0xDD,
    0x39, 0xE2, 0x3D, 0x16, 0x3F, 0x8A, 0x46, 0x8C, 0x62, 0xDB, 0xEA, 0xE0, 0x09, 0x06, 0xDF, 0xAD,
    0x5A, 0x89, 0xB4, 0x5C, 0xA5, 0xB7, 0x35, 0x3D, 0xC9, 0x98, 0xA8, 0x0D, 0x38, 0x03, 0xED, 0xA7,
    0x94, 0xB5, 0x5F, 0x99, 0xF5, 0x35, 0xD1, 0xC3, 0x9A, 0x24, 0x3C, 0x83, 0x52, 0xAD, 0x60, 0x2D,
    0x92, 0x6C, 0x38, 0x9D, 0x28, 0x16, 0xC9, 0x41, 0x34, 0x9E, 0xE2, 0x4E, 0x4F, 0x41, 0x59, 0x7F,
];

/// Modulus of the CA key for 証明者鍵ID `"6000020"` — the MF level chain, test hierarchy.
const MODULUS_6000020: &[u8; 256] = &[
    0xD0, 0xCB, 0x63, 0x03, 0x39, 0x9E, 0xC8, 0x67, 0x27, 0xE3, 0xE9, 0xE5, 0x09, 0x96, 0x58, 0x09,
    0x56, 0xEE, 0x87, 0x83, 0x9F, 0x5B, 0x67, 0x4C, 0xF3, 0x40, 0x48, 0xB4, 0x70, 0x18, 0x02, 0x95,
    0x00, 0x84, 0x1B, 0x5E, 0x6F, 0x6C, 0x64, 0x3E, 0xAE, 0xFE, 0x04, 0x24, 0x82, 0x03, 0x7A, 0xCD,
    0x83, 0x92, 0xE6, 0xC6, 0xA3, 0x86, 0xFB, 0x77, 0xDD, 0xB3, 0xF1, 0xD5, 0x1B, 0xCA, 0xC7, 0x6E,
    0x46, 0x9A, 0x09, 0xCE, 0xC8, 0x23, 0xDC, 0x78, 0xC1, 0xEB, 0xDB, 0x5A, 0x7C, 0x5A, 0xA0, 0x4A,
    0xC7, 0x09, 0x4A, 0xD7, 0x4B, 0x38, 0x63, 0x76, 0x01, 0x24, 0x1F, 0x43, 0xD3, 0xE6, 0xC6, 0xA4,
    0x85, 0x0E, 0x5A, 0x4E, 0x32, 0x44, 0xA1, 0x38, 0xFB, 0xA5, 0xA2, 0xE2, 0x2C, 0x31, 0x31, 0x2E,
    0xF8, 0x69, 0x9B, 0x7E, 0x8D, 0xB9, 0x82, 0xAB, 0x7B, 0x09, 0x3C, 0x4A, 0xC1, 0x3F, 0x05, 0x69,
    0xBA, 0x86, 0xB6, 0xB8, 0x86, 0xC1, 0x07, 0x2E, 0xF1, 0x74, 0xB2, 0x18, 0x11, 0x81, 0xF6, 0xD1,
    0x6F, 0xFF, 0x90, 0x4B, 0xE6, 0x52, 0xF4, 0x7A, 0xFC, 0x5C, 0x59, 0x73, 0x66, 0xED, 0x2F, 0xF3,
    0xBE, 0x09, 0x50, 0x08, 0x08, 0x55, 0xA8, 0x89, 0x30, 0xD3, 0x12, 0xD8, 0xBE, 0x2B, 0xB4, 0xAA,
    0xE2, 0xB1, 0xC1, 0x98, 0x48, 0x06, 0x4B, 0xA7, 0xE9, 0x2C, 0xB7, 0x4E, 0x52, 0xE1, 0x9C, 0x1C,
    0xFA, 0xB8, 0x67, 0x6B, 0x18, 0x70, 0x6B, 0xEB, 0xF9, 0x13, 0xB5, 0x7F, 0x92, 0xAE, 0x74, 0x98,
    0xC0, 0x87, 0x50, 0xE4, 0x16, 0x57, 0xA1, 0x74, 0x6B, 0x26, 0xDA, 0x2B, 0x0D, 0xEF, 0xC8, 0x5D,
    0x28, 0x6B, 0x1B, 0x85, 0xAD, 0xC9, 0x73, 0x93, 0x56, 0x40, 0x3F, 0x6B, 0x6E, 0x18, 0xA1, 0x93,
    0x8A, 0x11, 0xE3, 0xEC, 0x04, 0x3C, 0x1C, 0xDC, 0x5E, 0xF0, 0x3A, 0x8D, 0x51, 0x40, 0x2C, 0xC5,
];

/// Modulus of the CA key for 証明者鍵ID `"6000023"` — the 券面事項確認AP, test hierarchy.
const MODULUS_6000023: &[u8; 256] = &[
    0xE0, 0x8C, 0xA1, 0xCA, 0xA0, 0xE5, 0x8C, 0x5D, 0xF2, 0x4B, 0xFD, 0x67, 0xE4, 0x5B, 0x7C, 0xE4,
    0xB5, 0x0E, 0xFF, 0x82, 0x8C, 0x10, 0x56, 0x80, 0x55, 0xF7, 0xE0, 0x12, 0xB7, 0x21, 0x2E, 0x7D,
    0x28, 0x79, 0xB9, 0xE0, 0xB9, 0x51, 0xE7, 0xAC, 0x5A, 0x6D, 0xC0, 0xD7, 0xD3, 0xC3, 0x1C, 0x22,
    0x39, 0x51, 0xA1, 0xE2, 0x77, 0x4F, 0x39, 0x8C, 0xF4, 0x66, 0x02, 0xA8, 0xAE, 0xC0, 0x48, 0x98,
    0x71, 0x49, 0x81, 0xF8, 0x13, 0xCB, 0x9D, 0xBD, 0x2E, 0xF9, 0x06, 0x85, 0x28, 0xE9, 0x45, 0x03,
    0x61, 0xC0, 0x01, 0x54, 0x73, 0x8C, 0xA4, 0xDD, 0x79, 0xD1, 0x38, 0x09, 0x8B, 0x91, 0xFA, 0xE2,
    0x9A, 0x4F, 0xD7, 0x50, 0x55, 0x63, 0x67, 0xBB, 0x85, 0x41, 0x58, 0x95, 0x3A, 0xF5, 0x8C, 0x0E,
    0x8B, 0xBF, 0x28, 0x9C, 0x3A, 0x30, 0xE5, 0x95, 0xFE, 0xF0, 0x44, 0x51, 0x9E, 0x96, 0x7E, 0xF0,
    0x68, 0x6C, 0xBC, 0xF6, 0xEF, 0x6B, 0x9E, 0xD6, 0xFC, 0x2A, 0x19, 0xF8, 0x00, 0xCE, 0x07, 0xE9,
    0x29, 0xAC, 0x11, 0x55, 0x6F, 0x10, 0x73, 0x07, 0x73, 0x72, 0x27, 0x9B, 0xA1, 0x30, 0x21, 0x6F,
    0xC6, 0x80, 0xB7, 0xC3, 0x97, 0x88, 0xC8, 0xE7, 0x53, 0x4F, 0x71, 0xEE, 0xB4, 0xC0, 0x0C, 0x90,
    0x53, 0xFB, 0xF6, 0xE9, 0x2A, 0x07, 0x78, 0x4F, 0x26, 0x30, 0x8A, 0xF7, 0x8F, 0x9C, 0x18, 0x00,
    0x3E, 0xCB, 0xF1, 0x29, 0x65, 0xBD, 0x30, 0x30, 0x45, 0xB8, 0xA7, 0x63, 0x91, 0xC4, 0x31, 0x78,
    0x7F, 0xFC, 0x74, 0x5C, 0xC2, 0x74, 0x20, 0x66, 0x16, 0xD9, 0x1E, 0x81, 0xB3, 0x9B, 0xB9, 0xA2,
    0xDB, 0x4B, 0x64, 0xC4, 0xAD, 0x47, 0x83, 0x1A, 0xB0, 0x6C, 0xC4, 0x01, 0xF2, 0x16, 0x2F, 0x30,
    0xD9, 0x31, 0x6C, 0x38, 0x55, 0x7D, 0x4D, 0x96, 0xED, 0x5E, 0x76, 0xDB, 0x49, 0xB9, 0x09, 0x2D,
];

/// Modulus of the CA key for 証明者鍵ID `"6000033"` — the 券面入力補助AP, test hierarchy.
const MODULUS_6000033: &[u8; 256] = &[
    0xB1, 0xFE, 0x36, 0xBD, 0x14, 0x7B, 0xF4, 0x1B, 0x20, 0x11, 0xB9, 0x15, 0x68, 0x67, 0xC4, 0x11,
    0x8B, 0x05, 0xAE, 0x47, 0xD6, 0x91, 0xCD, 0xB4, 0xA4, 0x46, 0x7F, 0x49, 0x49, 0xAF, 0xDD, 0x71,
    0xE2, 0x8E, 0x12, 0xB5, 0xC6, 0x1E, 0x68, 0xF0, 0x0B, 0x63, 0x9A, 0x6C, 0xCB, 0xCF, 0x44, 0x79,
    0x87, 0x61, 0xC7, 0x70, 0x0A, 0x81, 0xF6, 0x66, 0xC6, 0x78, 0x31, 0x43, 0x3B, 0x74, 0x2A, 0x2C,
    0x11, 0x26, 0x94, 0x26, 0x01, 0xE2, 0x53, 0x71, 0xB2, 0xB9, 0x36, 0x31, 0x06, 0x7D, 0x46, 0x6F,
    0x20, 0x1E, 0xAF, 0x31, 0x39, 0x3B, 0x1B, 0xD6, 0xA4, 0x75, 0x89, 0xFB, 0x57, 0xB3, 0x18, 0x97,
    0x35, 0xA2, 0x7A, 0x24, 0x58, 0x3F, 0xDE, 0x2B, 0xF2, 0x6C, 0x2A, 0x34, 0xD8, 0x64, 0x5F, 0xE0,
    0xE6, 0xE2, 0xFE, 0x90, 0x16, 0x12, 0xCE, 0xF8, 0xC7, 0x40, 0xC2, 0x28, 0x28, 0x9A, 0xF6, 0xD4,
    0x57, 0xAC, 0xA3, 0xB1, 0xAA, 0x2F, 0x9E, 0xBB, 0x56, 0xDA, 0x35, 0x91, 0xC3, 0x08, 0x30, 0xB8,
    0xAF, 0xE2, 0xA1, 0xCA, 0x99, 0x95, 0x1E, 0x67, 0x0B, 0x9E, 0x9C, 0x0B, 0x40, 0xEB, 0xDB, 0xEC,
    0x21, 0x2F, 0x94, 0x00, 0xE5, 0xAA, 0xF5, 0xC2, 0xB5, 0x10, 0x7D, 0xE3, 0x4A, 0xB6, 0xBC, 0x66,
    0x42, 0x5A, 0x86, 0xD7, 0x31, 0xA3, 0x92, 0xE8, 0x10, 0x01, 0xDE, 0xA1, 0xCE, 0x56, 0x59, 0x81,
    0xBE, 0x15, 0x82, 0x56, 0xAE, 0x05, 0x59, 0x8A, 0x2B, 0x8B, 0xFB, 0x04, 0xC1, 0xB6, 0x6E, 0xE2,
    0x00, 0x8E, 0x01, 0x9F, 0xB1, 0xB2, 0xBA, 0x37, 0x85, 0xE0, 0xCA, 0x78, 0xCA, 0x31, 0xEA, 0x5F,
    0x09, 0xB4, 0xD5, 0x50, 0x57, 0x7D, 0xBF, 0x12, 0xA7, 0x47, 0xAB, 0xD5, 0xE1, 0xC4, 0x50, 0xC0,
    0x75, 0x0D, 0xF9, 0x65, 0xF5, 0x3E, 0xA0, 0x8B, 0xBF, 0x12, 0xE4, 0x0A, 0x40, 0x57, 0xC7, 0x4D,
];

/// Every CA key this crate knows, in 証明者鍵ID order.
///
/// To add one — a test hierarchy key, or a rotated production key — put its modulus in a
/// `MODULUS_…` constant above and add a `CaKey` entry here. Nothing else needs to change:
/// [`find`] and [`CardVerifiableCertificate::verify`](crate::data::CardVerifiableCertificate::verify)
/// both go through this table.
pub const KNOWN: &[CaKey] = &[
    CaKey {
        key_id: &[
            0x35, 0x30, 0x30, 0x30, 0x30, 0x32, 0x30, 0x08, 0x05, 0x30, 0x30, 0x31, 0x00, 0x00,
            0x00, 0xA8,
        ],
        modulus: MODULUS_5000020,
        exponent: E65537,
    },
    CaKey {
        key_id: &[
            0x35, 0x30, 0x30, 0x30, 0x30, 0x32, 0x33, 0x08, 0x05, 0x30, 0x30, 0x31, 0x00, 0x00,
            0x00, 0x00,
        ],
        modulus: MODULUS_5000023,
        exponent: E65537,
    },
    CaKey {
        key_id: &[
            0x35, 0x30, 0x30, 0x30, 0x30, 0x33, 0x33, 0x08, 0x05, 0x30, 0x30, 0x31, 0x00, 0x00,
            0x00, 0x00,
        ],
        modulus: MODULUS_5000033,
        exponent: E65537,
    },
    CaKey {
        key_id: &[
            0x36, 0x30, 0x30, 0x30, 0x30, 0x32, 0x30, 0x08, 0x05, 0x30, 0x30, 0x31, 0x00, 0x00,
            0x00, 0xA8,
        ],
        modulus: MODULUS_6000020,
        exponent: E65537,
    },
    CaKey {
        key_id: &[
            0x36, 0x30, 0x30, 0x30, 0x30, 0x32, 0x33, 0x08, 0x05, 0x30, 0x30, 0x31, 0x00, 0x00,
            0x00, 0x00,
        ],
        modulus: MODULUS_6000023,
        exponent: E65537,
    },
    CaKey {
        key_id: &[
            0x36, 0x30, 0x30, 0x30, 0x30, 0x33, 0x33, 0x08, 0x05, 0x30, 0x30, 0x31, 0x00, 0x00,
            0x00, 0x00,
        ],
        modulus: MODULUS_6000033,
        exponent: E65537,
    },
];

/// Look up a CA key by 証明者鍵ID.
///
/// The identifier is compared in full, all 16 bytes, so a certificate from a different hierarchy
/// does not match a production key by accident.
pub fn find(key_id: &KeyId) -> Option<&'static CaKey> {
    KNOWN.iter().find(|k| k.key_id == key_id.as_bytes())
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn every_entry_is_a_well_formed_rsa_2048_key() {
        assert!(!KNOWN.is_empty());
        for key in KNOWN {
            assert_eq!(key.modulus.len(), 256, "{} is not RSA-2048", key.name());
            assert_eq!(key.exponent, E65537);
            // The identifier is one of the 16 byte references: 7 digits, 08 05, 3 digits, then
            // three NULs. The last byte is *not* always zero — the MF level keys carry a value
            // there — so it is deliberately not asserted.
            assert!(key.key_id[..7].iter().all(u8::is_ascii_digit));
            assert_eq!(&key.key_id[7..9], &[0x08, 0x05]);
            assert!(key.key_id[9..12].iter().all(u8::is_ascii_digit));
            assert_eq!(&key.key_id[12..15], &[0, 0, 0]);
        }
    }

    #[test]
    fn lookup_matches_the_whole_identifier() {
        let bytes = *KNOWN[0].key_id;
        let production = KeyId::parse(&bytes).unwrap();
        assert!(find(&production).is_some());

        // The two hierarchies differ only in the first digit, so each must resolve to its own key
        // and never to the other's.
        let mut other = bytes;
        other[0] = b'6';
        let other = KeyId::parse(&other).unwrap();
        assert_ne!(
            find(&other).map(|k| k.modulus),
            find(&production).map(|k| k.modulus)
        );

        // An identifier that is in neither hierarchy resolves to nothing at all.
        let mut absent = bytes;
        absent[0] = b'9';
        assert!(find(&KeyId::parse(&absent).unwrap()).is_none());

        // And the padding counts: two identifiers that differ only there are different keys. The
        // MF level entries really do carry a non-zero byte there, so this is not hypothetical.
        let mut padded = bytes;
        padded[15] ^= 0x01;
        assert!(find(&KeyId::parse(&padded).unwrap()).is_none());
    }

    #[test]
    fn no_two_entries_share_a_key_or_an_identifier() {
        for (i, a) in KNOWN.iter().enumerate() {
            for b in &KNOWN[i + 1..] {
                assert_ne!(a.key_id, b.key_id, "duplicate 証明者鍵ID {}", a.name());
                assert_ne!(
                    a.modulus,
                    b.modulus,
                    "{} and {} share a key",
                    a.name(),
                    b.name()
                );
            }
        }
    }

    #[test]
    fn both_hierarchies_are_present() {
        // x000023 signs 券面事項確認AP certificates, x000033 signs 券面入力補助AP ones, and
        // 6000020 signs the intermediate of the chain reachable at the MF level.
        for name in ["5000023", "5000033", "6000020", "6000023", "6000033"] {
            assert!(KNOWN.iter().any(|k| k.name() == name), "missing {name}");
        }
    }
}