Struct x509_parser::public_key::RSAPublicKey

source ·

pub struct RSAPublicKey<'a> {
    pub modulus: &'a [u8],
    pub exponent: &'a [u8],
}

Expand description

RSA public Key, defined in rfc3279

Fields§

§modulus: &'a [u8]

Raw bytes of the modulus

This possibly includes a leading 0 if the MSB is 1

§exponent: &'a [u8]

Raw bytes of the exponent

This possibly includes a leading 0 if the MSB is 1

Implementations§

source §

impl<'a> RSAPublicKey<'a>

source

pub fn try_exponent(&self) -> Result<u64, X509Error>

Attempt to convert exponent to u64

Returns an error if integer is too large, empty, or negative

Examples found in repository ?

examples/print-cert.rs (line 302)

fn print_x509_ski(public_key: &SubjectPublicKeyInfo) {
    println!("    Public Key Algorithm:");
    print_x509_digest_algorithm(&public_key.algorithm, 6);
    match public_key.parsed() {
        Ok(PublicKey::RSA(rsa)) => {
            println!("    RSA Public Key: ({} bit)", rsa.key_size());
            // print_hex_dump(rsa.modulus, 1024);
            for l in format_number_to_hex_with_colon(rsa.modulus, 16) {
                println!("        {}", l);
            }
            if let Ok(e) = rsa.try_exponent() {
                println!("    exponent: 0x{:x} ({})", e, e);
            } else {
                println!("    exponent: <INVALID>:");
                print_hex_dump(rsa.exponent, 32);
            }
        }
        Ok(PublicKey::EC(ec)) => {
            println!("    EC Public Key: ({} bit)", ec.key_size());
            for l in format_number_to_hex_with_colon(ec.data(), 16) {
                println!("        {}", l);
            }
            // // identify curve
            // if let Some(params) = &public_key.algorithm.parameters {
            //     let curve_oid = params.as_oid();
            //     let curve = curve_oid
            //         .map(|oid| {
            //             oid_registry()
            //                 .get(oid)
            //                 .map(|entry| entry.sn())
            //                 .unwrap_or("<UNKNOWN>")
            //         })
            //         .unwrap_or("<ERROR: NOT AN OID>");
            //     println!("    Curve: {}", curve);
            // }
        }
        Ok(PublicKey::DSA(y)) => {
            println!("    DSA Public Key: ({} bit)", 8 * y.len());
            for l in format_number_to_hex_with_colon(y, 16) {
                println!("        {}", l);
            }
        }
        Ok(PublicKey::GostR3410(y)) => {
            println!("    GOST R 34.10-94 Public Key: ({} bit)", 8 * y.len());
            for l in format_number_to_hex_with_colon(y, 16) {
                println!("        {}", l);
            }
        }
        Ok(PublicKey::GostR3410_2012(y)) => {
            println!("    GOST R 34.10-2012 Public Key: ({} bit)", 8 * y.len());
            for l in format_number_to_hex_with_colon(y, 16) {
                println!("        {}", l);
            }
        }
        Ok(PublicKey::Unknown(b)) => {
            println!("    Unknown key type");
            print_hex_dump(b, 256);
            if let Ok((rem, res)) = der_parser::parse_der(b) {
                eprintln!("rem: {} bytes", rem.len());
                eprintln!("{:?}", res);
            } else {
                eprintln!("      <Could not parse key as DER>");
            }
        }
        Err(_) => {
            println!("    INVALID PUBLIC KEY");
        }
    }
    // dbg!(&public_key);
    // todo!();
}

source

pub fn key_size(&self) -> usize

Return the key size (in bits) or 0

Examples found in repository ?

examples/print-cert.rs (line 297)

fn print_x509_ski(public_key: &SubjectPublicKeyInfo) {
    println!("    Public Key Algorithm:");
    print_x509_digest_algorithm(&public_key.algorithm, 6);
    match public_key.parsed() {
        Ok(PublicKey::RSA(rsa)) => {
            println!("    RSA Public Key: ({} bit)", rsa.key_size());
            // print_hex_dump(rsa.modulus, 1024);
            for l in format_number_to_hex_with_colon(rsa.modulus, 16) {
                println!("        {}", l);
            }
            if let Ok(e) = rsa.try_exponent() {
                println!("    exponent: 0x{:x} ({})", e, e);
            } else {
                println!("    exponent: <INVALID>:");
                print_hex_dump(rsa.exponent, 32);
            }
        }
        Ok(PublicKey::EC(ec)) => {
            println!("    EC Public Key: ({} bit)", ec.key_size());
            for l in format_number_to_hex_with_colon(ec.data(), 16) {
                println!("        {}", l);
            }
            // // identify curve
            // if let Some(params) = &public_key.algorithm.parameters {
            //     let curve_oid = params.as_oid();
            //     let curve = curve_oid
            //         .map(|oid| {
            //             oid_registry()
            //                 .get(oid)
            //                 .map(|entry| entry.sn())
            //                 .unwrap_or("<UNKNOWN>")
            //         })
            //         .unwrap_or("<ERROR: NOT AN OID>");
            //     println!("    Curve: {}", curve);
            // }
        }
        Ok(PublicKey::DSA(y)) => {
            println!("    DSA Public Key: ({} bit)", 8 * y.len());
            for l in format_number_to_hex_with_colon(y, 16) {
                println!("        {}", l);
            }
        }
        Ok(PublicKey::GostR3410(y)) => {
            println!("    GOST R 34.10-94 Public Key: ({} bit)", 8 * y.len());
            for l in format_number_to_hex_with_colon(y, 16) {
                println!("        {}", l);
            }
        }
        Ok(PublicKey::GostR3410_2012(y)) => {
            println!("    GOST R 34.10-2012 Public Key: ({} bit)", 8 * y.len());
            for l in format_number_to_hex_with_colon(y, 16) {
                println!("        {}", l);
            }
        }
        Ok(PublicKey::Unknown(b)) => {
            println!("    Unknown key type");
            print_hex_dump(b, 256);
            if let Ok((rem, res)) = der_parser::parse_der(b) {
                eprintln!("rem: {} bytes", rem.len());
                eprintln!("{:?}", res);
            } else {
                eprintln!("      <Could not parse key as DER>");
            }
        }
        Err(_) => {
            println!("    INVALID PUBLIC KEY");
        }
    }
    // dbg!(&public_key);
    // todo!();
}