Assertion: cryptography | /r/CapableOf | focus on message confidentiality
Facets:
value: before the modern era
type: TEMPORAL
value: into an incomprehensible one
type: OTHER
Source sentences:
text: Before the modern era, cryptography focused on message confidentiality (i.e., encryption)—conversion of messages from a comprehensible form into an incomprehensible one and back again at the other end, rendering it unreadable by interceptors or eavesdroppers without secret knowledge (namely the key needed for decryption of that message).