Application Load Balancer (ALB) and Network Load Balancer(NLB) now support Transport Layer Security (TLS) policies that uses Federal Information Processing Standard (FIPS) 140-3 certified cryptographic modules to protect sensitive information. FIPS 140-3 is the latest technical standard for cryptographic modules from the U.S. and Canadian Federal governments. ALB/NLB uses AWS-Libcrypto, which is a FIPS 140-3 validated purpose built cryptographic module maintained by AWS that is secure and performant.
Source:: Amazon AWS