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Add key management system

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This adds a key management system that stores (currently) two data
encryption keys of length 128, 192, or 256 bits.  The data keys are
AES256 encrypted using a key encryption key, and validated via GCM
cipher mode.  A command to obtain the key encryption key must be
specified at initdb time, and will be run at every database server
start.  New parameters allow a file descriptor open to the terminal to
be passed.  pg_upgrade support has also been added.

Discussion: https://postgr.es/m/CA+fd4k7q5o6Nc_AaX6BcYM9yqTbC6_pnH-6nSD=54Zp6NBQTCQ@mail.gmail.com
Discussion: https://postgr.es/m/20201202213814.GG20285@momjian.us

Author: Masahiko Sawada, me, Stephen Frost
This commit is contained in:
Bruce Momjian
2020-12-25 10:19:44 -05:00
parent 5c31afc49d
commit 978f869b99
49 changed files with 2091 additions and 35 deletions
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5
src/backend/utils/misc/postgresql.conf.sample
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@ -632,6 +632,11 @@
# autovacuum, -1 means use
# vacuum_cost_limit
#------------------------------------------------------------------------------
# ENCRYPTION
#------------------------------------------------------------------------------
#cluster_key_command = ''
#------------------------------------------------------------------------------
# CLIENT CONNECTION DEFAULTS