Index: go/api/go1.txt

===================================================================

--- go.orig/api/go1.txt

+++ go/api/go1.txt

@@ -412,7 +412,6 @@ pkg crypto/ecdsa, type PublicKey struct,

 pkg crypto/ecdsa, type PublicKey struct, embedded elliptic.Curve

 pkg crypto/elliptic, func GenerateKey(Curve, io.Reader) ([]uint8, *big.Int, *big.Int, error)

 pkg crypto/elliptic, func Marshal(Curve, *big.Int, *big.Int) []uint8

-pkg crypto/elliptic, func P224() Curve

 pkg crypto/elliptic, func P256() Curve

 pkg crypto/elliptic, func P384() Curve

 pkg crypto/elliptic, func P521() Curve

Index: go/src/crypto/ecdsa/ecdsa_test.go

===================================================================

--- go.orig/src/crypto/ecdsa/ecdsa_test.go

+++ go/src/crypto/ecdsa/ecdsa_test.go

@@ -33,7 +33,6 @@ func testKeyGeneration(t *testing.T, c e

 }

 func TestKeyGeneration(t *testing.T) {

-	testKeyGeneration(t, elliptic.P224(), "p224")

 	if testing.Short() {

 		return

 	}

@@ -63,7 +62,6 @@ func testSignAndVerify(t *testing.T, c e

 }

 func TestSignAndVerify(t *testing.T) {

-	testSignAndVerify(t, elliptic.P224(), "p224")

 	if testing.Short() {

 		return

 	}

@@ -129,8 +127,6 @@ func TestVectors(t *testing.T) {

 			parts := strings.SplitN(line, ",", 2)

 			switch parts[0] {

-			case "P-224":

-				pub.Curve = elliptic.P224()

 			case "P-256":

 				pub.Curve = elliptic.P256()

 			case "P-384":

Index: go/src/crypto/elliptic/bottombits.go

===================================================================

--- /dev/null

+++ go/src/crypto/elliptic/bottombits.go

@@ -0,0 +1,14 @@

+

+// Copyright 2012 The Go Authors.  All rights reserved.

+// Use of this source code is governed by a BSD-style

+// license that can be found in the LICENSE file.

+

+package elliptic

+

+const bottom12Bits = 0xfff

+const bottom28Bits = 0xfffffff

+

+const two31p3 = 1<<31 + 1<<3

+const two31m3 = 1<<31 - 1<<3

+const two31m15m3 = 1<<31 - 1<<15 - 1<<3

+

Index: go/src/crypto/elliptic/elliptic.go

===================================================================

--- go.orig/src/crypto/elliptic/elliptic.go

+++ go/src/crypto/elliptic/elliptic.go

@@ -326,7 +326,6 @@ var p384 *CurveParams

 var p521 *CurveParams

 func initAll() {

-	initP224()

 	initP256()

 	initP384()

 	initP521()

Index: go/src/crypto/elliptic/elliptic_test.go

===================================================================

--- go.orig/src/crypto/elliptic/elliptic_test.go

+++ go/src/crypto/elliptic/elliptic_test.go

@@ -1,3 +1,5 @@

+// +build ignore

+

 // Copyright 2010 The Go Authors. All rights reserved.

 // Use of this source code is governed by a BSD-style

 // license that can be found in the LICENSE file.

Index: go/src/crypto/elliptic/p224.go

===================================================================

--- go.orig/src/crypto/elliptic/p224.go

+++ go/src/crypto/elliptic/p224.go

@@ -1,3 +1,5 @@

+// +build ignore

+

 // Copyright 2012 The Go Authors.  All rights reserved.

 // Use of this source code is governed by a BSD-style

 // license that can be found in the LICENSE file.

@@ -183,10 +185,6 @@ func p224Add(out, a, b *p224FieldElement

 	}

 }

-const two31p3 = 1<<31 + 1<<3

-const two31m3 = 1<<31 - 1<<3

-const two31m15m3 = 1<<31 - 1<<15 - 1<<3

-

 // p224ZeroModP31 is 0 mod p where bit 31 is set in all limbs so that we can

 // subtract smaller amounts without underflow. See the section "Subtraction" in

 // [1] for reasoning.

@@ -215,9 +213,6 @@ const two63m35m19 = 1<<63 - 1<<35 - 1<<1

 // "Subtraction" in [1] for why.

 var p224ZeroModP63 = [8]uint64{two63p35, two63m35, two63m35, two63m35, two63m35m19, two63m35, two63m35, two63m35}

-const bottom12Bits = 0xfff

-const bottom28Bits = 0xfffffff

-

 // p224Mul computes *out = a*b

 //

 // a[i] < 2**29, b[i] < 2**30 (or vice versa)

Index: go/src/crypto/elliptic/p224_test.go

===================================================================

--- go.orig/src/crypto/elliptic/p224_test.go

+++ go/src/crypto/elliptic/p224_test.go

@@ -1,3 +1,5 @@

+// +build ignore

+

 // Copyright 2012 The Go Authors.  All rights reserved.

 // Use of this source code is governed by a BSD-style

 // license that can be found in the LICENSE file.

Index: go/src/crypto/x509/x509.go

===================================================================

--- go.orig/src/crypto/x509/x509.go

+++ go/src/crypto/x509/x509.go

@@ -306,9 +306,6 @@ func getPublicKeyAlgorithmFromOID(oid as

 // RFC 5480, 2.1.1.1. Named Curve

 //

-// secp224r1 OBJECT IDENTIFIER ::= {

-//   iso(1) identified-organization(3) certicom(132) curve(0) 33 }

-//

 // secp256r1 OBJECT IDENTIFIER ::= {

 //   iso(1) member-body(2) us(840) ansi-X9-62(10045) curves(3)

 //   prime(1) 7 }

@@ -321,7 +318,6 @@ func getPublicKeyAlgorithmFromOID(oid as

 //

 // NB: secp256r1 is equivalent to prime256v1

 var (

-	oidNamedCurveP224 = asn1.ObjectIdentifier{1, 3, 132, 0, 33}

 	oidNamedCurveP256 = asn1.ObjectIdentifier{1, 2, 840, 10045, 3, 1, 7}

 	oidNamedCurveP384 = asn1.ObjectIdentifier{1, 3, 132, 0, 34}

 	oidNamedCurveP521 = asn1.ObjectIdentifier{1, 3, 132, 0, 35}

@@ -329,8 +325,6 @@ var (

 func namedCurveFromOID(oid asn1.ObjectIdentifier) elliptic.Curve {

 	switch {

-	case oid.Equal(oidNamedCurveP224):

-		return elliptic.P224()

 	case oid.Equal(oidNamedCurveP256):

 		return elliptic.P256()

 	case oid.Equal(oidNamedCurveP384):

@@ -343,8 +337,6 @@ func namedCurveFromOID(oid asn1.ObjectId

 func oidFromNamedCurve(curve elliptic.Curve) (asn1.ObjectIdentifier, bool) {

 	switch curve {

-	case elliptic.P224():

-		return oidNamedCurveP224, true

 	case elliptic.P256():

 		return oidNamedCurveP256, true

 	case elliptic.P384():

@@ -1371,7 +1363,7 @@ func signingParamsForPrivateKey(priv int

 		pubType = ECDSA

 		switch priv.Curve {

-		case elliptic.P224(), elliptic.P256():

+		case elliptic.P256():

 			hashFunc = crypto.SHA256

 			sigAlgo.Algorithm = oidSignatureECDSAWithSHA256

 		case elliptic.P384():