diff options
Diffstat (limited to 'vendor/github.com/rsc/letsencrypt/vendor/github.com/miekg/dns/dnssec_keygen.go')
-rw-r--r-- | vendor/github.com/rsc/letsencrypt/vendor/github.com/miekg/dns/dnssec_keygen.go | 156 |
1 files changed, 0 insertions, 156 deletions
diff --git a/vendor/github.com/rsc/letsencrypt/vendor/github.com/miekg/dns/dnssec_keygen.go b/vendor/github.com/rsc/letsencrypt/vendor/github.com/miekg/dns/dnssec_keygen.go deleted file mode 100644 index 5e4b7741a..000000000 --- a/vendor/github.com/rsc/letsencrypt/vendor/github.com/miekg/dns/dnssec_keygen.go +++ /dev/null @@ -1,156 +0,0 @@ -package dns - -import ( - "crypto" - "crypto/dsa" - "crypto/ecdsa" - "crypto/elliptic" - "crypto/rand" - "crypto/rsa" - "math/big" -) - -// Generate generates a DNSKEY of the given bit size. -// The public part is put inside the DNSKEY record. -// The Algorithm in the key must be set as this will define -// what kind of DNSKEY will be generated. -// The ECDSA algorithms imply a fixed keysize, in that case -// bits should be set to the size of the algorithm. -func (k *DNSKEY) Generate(bits int) (crypto.PrivateKey, error) { - switch k.Algorithm { - case DSA, DSANSEC3SHA1: - if bits != 1024 { - return nil, ErrKeySize - } - case RSAMD5, RSASHA1, RSASHA256, RSASHA1NSEC3SHA1: - if bits < 512 || bits > 4096 { - return nil, ErrKeySize - } - case RSASHA512: - if bits < 1024 || bits > 4096 { - return nil, ErrKeySize - } - case ECDSAP256SHA256: - if bits != 256 { - return nil, ErrKeySize - } - case ECDSAP384SHA384: - if bits != 384 { - return nil, ErrKeySize - } - } - - switch k.Algorithm { - case DSA, DSANSEC3SHA1: - params := new(dsa.Parameters) - if err := dsa.GenerateParameters(params, rand.Reader, dsa.L1024N160); err != nil { - return nil, err - } - priv := new(dsa.PrivateKey) - priv.PublicKey.Parameters = *params - err := dsa.GenerateKey(priv, rand.Reader) - if err != nil { - return nil, err - } - k.setPublicKeyDSA(params.Q, params.P, params.G, priv.PublicKey.Y) - return priv, nil - case RSAMD5, RSASHA1, RSASHA256, RSASHA512, RSASHA1NSEC3SHA1: - priv, err := rsa.GenerateKey(rand.Reader, bits) - if err != nil { - return nil, err - } - k.setPublicKeyRSA(priv.PublicKey.E, priv.PublicKey.N) - return priv, nil - case ECDSAP256SHA256, ECDSAP384SHA384: - var c elliptic.Curve - switch k.Algorithm { - case ECDSAP256SHA256: - c = elliptic.P256() - case ECDSAP384SHA384: - c = elliptic.P384() - } - priv, err := ecdsa.GenerateKey(c, rand.Reader) - if err != nil { - return nil, err - } - k.setPublicKeyECDSA(priv.PublicKey.X, priv.PublicKey.Y) - return priv, nil - default: - return nil, ErrAlg - } -} - -// Set the public key (the value E and N) -func (k *DNSKEY) setPublicKeyRSA(_E int, _N *big.Int) bool { - if _E == 0 || _N == nil { - return false - } - buf := exponentToBuf(_E) - buf = append(buf, _N.Bytes()...) - k.PublicKey = toBase64(buf) - return true -} - -// Set the public key for Elliptic Curves -func (k *DNSKEY) setPublicKeyECDSA(_X, _Y *big.Int) bool { - if _X == nil || _Y == nil { - return false - } - var intlen int - switch k.Algorithm { - case ECDSAP256SHA256: - intlen = 32 - case ECDSAP384SHA384: - intlen = 48 - } - k.PublicKey = toBase64(curveToBuf(_X, _Y, intlen)) - return true -} - -// Set the public key for DSA -func (k *DNSKEY) setPublicKeyDSA(_Q, _P, _G, _Y *big.Int) bool { - if _Q == nil || _P == nil || _G == nil || _Y == nil { - return false - } - buf := dsaToBuf(_Q, _P, _G, _Y) - k.PublicKey = toBase64(buf) - return true -} - -// Set the public key (the values E and N) for RSA -// RFC 3110: Section 2. RSA Public KEY Resource Records -func exponentToBuf(_E int) []byte { - var buf []byte - i := big.NewInt(int64(_E)).Bytes() - if len(i) < 256 { - buf = make([]byte, 1, 1+len(i)) - buf[0] = uint8(len(i)) - } else { - buf = make([]byte, 3, 3+len(i)) - buf[0] = 0 - buf[1] = uint8(len(i) >> 8) - buf[2] = uint8(len(i)) - } - buf = append(buf, i...) - return buf -} - -// Set the public key for X and Y for Curve. The two -// values are just concatenated. -func curveToBuf(_X, _Y *big.Int, intlen int) []byte { - buf := intToBytes(_X, intlen) - buf = append(buf, intToBytes(_Y, intlen)...) - return buf -} - -// Set the public key for X and Y for Curve. The two -// values are just concatenated. -func dsaToBuf(_Q, _P, _G, _Y *big.Int) []byte { - t := divRoundUp(divRoundUp(_G.BitLen(), 8)-64, 8) - buf := []byte{byte(t)} - buf = append(buf, intToBytes(_Q, 20)...) - buf = append(buf, intToBytes(_P, 64+t*8)...) - buf = append(buf, intToBytes(_G, 64+t*8)...) - buf = append(buf, intToBytes(_Y, 64+t*8)...) - return buf -} |