Egyptian hieroglyphs

Egyptian hieroglyphs form one of the oldest and most iconic writing systems in human history. Emerging around 3300 BCE in the Nile Valley, they were used without major interruption for more than 3500 years, down to the last Ptolemaic temples in the 4th century CE.

What makes them special: they mix several writing levels at once:

• Ideograms — one sign = one concept (the sun ☀ = “sun” or “day”).
• Phonograms — one sign = a sound or sound group (the mouth 𓂋 = consonant r).
• Determinatives — signs added to clarify the semantic category (a man, a woman, an action, a god).

Champollion’s rediscovery

For fifteen centuries, after Theodosius closed the last temples in 391 CE, no one could read hieroglyphs. The knowledge died with the last generation of Egyptian priests.

The Rosetta Stone

In 1799, during Bonaparte’s Egyptian expedition, lieutenant Pierre-François Bouchard discovered near Rosetta a carved stele bearing three texts:

• At the top: Egyptian hieroglyphs (14 lines).
• In the middle: demotic (the late cursive form of Egyptian, 32 lines).
• At the bottom: ancient Greek (54 lines).

The Greek text, readable, revealed it as a royal decree of Ptolemy V (196 BCE), and that the three versions said the same thing. The stone was seized by the British in 1801 (still at the British Museum today), but copies circulated all over Europe.

The decipherment (1822)

Jean-François Champollion (1790–1832), a prodigy of ancient languages, had been working on the stone since 1808. He had a key intuition: if certain cartouches (royal frames) contained proper names, they should include phonetic signs transcribing their Greek pronunciation.

On 14 September 1822, aged 32, he deciphered the names PTOLEMY and CLEOPATRA in two different cartouches — and noticed that several common signs appeared in matching positions (P, T, O, L). That was the phonetic key to the system.

He laid out his demonstration in the Lettre à M. Dacier (27 September 1822) — the founding text of modern Egyptology.

The modern coding manual

To transliterate a Latin text into hieroglyphs (decorative, pedagogical or cryptographic use), the phonetic table standardised by Alan Gardiner in his Egyptian Grammar (1927) is used:

A → 𓄿 (vulture)              N → 𓈖 (water)
B → 𓃀 (leg)                  O → 𓅱 (quail chick)
C → 𓎡 (basket)               P → 𓊪 (stool)
D → 𓂧 (hand)                 Q → 𓎤 (stand)
E → 𓇋 (reed)                 R → 𓂋 (mouth)
F → 𓆑 (horned viper)         S → 𓋴 (folded cloth)
G → 𓎼 (jar)                  T → 𓏏 (loaf)
H → 𓉔 (courtyard)            U → 𓅱 (quail — like O)
I → 𓇋 (reed — like E)        V → 𓆑 (viper — like F)
J → 𓆓 (cobra)                W → 𓅱 (quail — like O)
K → 𓎡 (basket — like C)      X → 𓎡𓋴 (basket+folded cloth)
L → 𓃭 (lion)                 Y → 𓇌 (two reeds)
M → 𓅓 (owl)                  Z → 𓊃 (door bolt)

(The correspondences are not bijective — some Latin letters share a sign because the sound has no distinct equivalent in Egyptian.)

As a cryptographic device

Hieroglyphs are not a cipher in the strict cryptographic sense — Gardiner’s table has been public for a century, and Champollion is taught in every introductory ancient history class. But hieroglyphic writing does offer:

• Themed steganography: a hieroglyphic cartouche on a wall, stele or piece of jewellery can hide a modern message without raising suspicion.
• Exotic monoalphabetic substitution: the Gardiner phonetic table maps cleanly to a 1:1 encoding of a Latin text.
• Themed puzzles: Egyptian-themed escape rooms, treasure-hunt enigmas (Indiana Jones, Pyramid of Mystery).

Security against a cryptanalyst is nil — but the cultural and iconic value is enormous.

Historical variants

Ancient Egypt used three writing systems in parallel:

• Hieroglyphs (3300 BCE) — monumental, religious, royal use. Pictographic and ideographic.
• Hieratic (2700 BCE) — simplified cursive form for administrative scribes. Fewer pictograms, faster to draw.
• Demotic (650 BCE) — even more simplified, almost alphabetic. Everyday and popular use.

The three coexisted until the end of the Pharaonic era. Greek, brought in by the Ptolemies, eventually replaced them.