remove support for FIPS 140-2 with boringcrypto (#21292)

This commit removes FIPS 140-2 related code for the following
reasons:
 - FIPS 140-2 is a compliance, not a security requirement. Being
   FIPS 140-2 compliant has no security implication on its own.
   From a tech. perspetive, a FIPS 140-2 compliant implementation
   is not necessarily secure and a non-FIPS 140-2 compliant implementation
   is not necessarily insecure. It depends on the concret design and
   crypto primitives/constructions used.
 - The boringcrypto branch used to achieve FIPS 140-2 compliance was never
   officially supported by the Go team and is now in maintainance mode.
   It is replaced by a built-in FIPS 140-3 module. It will be removed
   eventually. Ref: https://github.com/golang/go/issues/69536
 - FIPS 140-2 modules are no longer re-certified after Sep. 2026.
   Ref: https://csrc.nist.gov/projects/cryptographic-module-validation-program

Signed-off-by: Andreas Auernhammer <github@aead.dev>

cmd/grid.go

@@ -22,7 +22,7 @@ import (
 	"crypto/tls"
 	"sync/atomic"
 
-	"github.com/minio/minio/internal/fips"
+	"github.com/minio/minio/internal/crypto"
 	"github.com/minio/minio/internal/grid"
 	xhttp "github.com/minio/minio/internal/http"
 	"github.com/minio/minio/internal/rest"
@@ -52,8 +52,8 @@ func initGlobalGrid(ctx context.Context, eps EndpointServerPools) error {
 			newCachedAuthToken(),
 			&tls.Config{
 				RootCAs:          globalRootCAs,
-				CipherSuites:     fips.TLSCiphers(),
-				CurvePreferences: fips.TLSCurveIDs(),
+				CipherSuites:     crypto.TLSCiphers(),
+				CurvePreferences: crypto.TLSCurveIDs(),
 			}),
 		Local:        local,
 		Hosts:        hosts,
@@ -85,8 +85,8 @@ func initGlobalLockGrid(ctx context.Context, eps EndpointServerPools) error {
 			newCachedAuthToken(),
 			&tls.Config{
 				RootCAs:          globalRootCAs,
-				CipherSuites:     fips.TLSCiphers(),
-				CurvePreferences: fips.TLSCurveIDs(),
+				CipherSuites:     crypto.TLSCiphers(),
+				CurvePreferences: crypto.TLSCurveIDs(),
 			}, grid.RouteLockPath),
 		Local:        local,
 		Hosts:        hosts,