Support long C_x #1134

Job	Run time
generate-fstar	2m 0s
check-style	15s
test-lakers-python	53s
unit-tests (lakers-crypto/psa, ead-none)	51s
unit-tests-default	51s
unit-tests (lakers-crypto/psa, ead-authz)	51s
unit-tests (lakers-crypto/rustcrypto, ead-none)	41s
unit-tests (lakers-crypto/rustcrypto, ead-authz)	40s
build-coap-example	50s
build-lakers-c (crypto-rustcrypto)	1m 16s
build-edhoc-package (lakers-crypto/psa)	1m 12s
build-lakers-c (crypto-psa-baremetal)	1m 36s
build-example-for-cortex-m4 (crypto-psa)	1m 26s
build-edhoc-package (lakers-crypto/psa-baremetal)	1m 11s
build-lakers-c-example	1m 32s
build-lakers-c (crypto-cryptocell310)	1m 11s
build-example-for-cortex-m4 (crypto-cryptocell310)	1m 21s
build-edhoc-package (lakers-crypto/cryptocell310)	1m 11s
build-edhoc-package (lakers-crypto/rustcrypto)	57s
run-example-on-qemu (crypto-psa)	1m 42s
release	0s
	22m 27s

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