http://exhibits.temple.edu/s/william-still/page/negro-spirituals
Negro spirituals were created and sung by enslaved Africans. The songs are very beautiful and contain coded messages used by enslaved Africans to convey hidden signals for escaping, hiding and expressing danger as well as discontent with slavery. (1) Oh Lord How Come Me Here Lord, how come me here? Lord, how come me here? Lord, how come me here? I wish I never was born There ain’t no freedom ...
https://cis.temple.edu/~qzeng/cis4360-spring17/papers/An%20Overview%20of%20Cryptography.pdf
CLEFIA is one of the new-generation lightweight blockcipher algorithms designed after AES, offering high performance in software and hardware as well as a lightweight implementation in hardware.