ASN.1 OIDs and sum: Change algorithm for sum #706

Job	Run time
build library (--disable-asm --enable-cryptonly --enable-all-crypto --disable-examples --disable-...	30s
build library (--enable-intelasm --enable-cryptonly --enable-all-crypto --disable-examples --disa...	32s
build library (--enable-smallstack --disable-asm --enable-cryptonly --enable-all-crypto --disable...	30s
build library (--enable-smallstack --enable-intelasm --enable-cryptonly --enable-all-crypto --dis...	33s
build library (--enable-cryptonly --enable-all-crypto --disable-examples --disable-benchmark --di...	41s
	2m 46s

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